path: root/history.txt

BYOB4 (Snap) history
---------------------
110511
------
* Scrolling by dragging
* Scrolling by dragging velocity

110516
------
* Autoscrolling

110518
------
* Textures

110524
------
* CommandSlotMorphs (%c)

110527
------
* Templates
* Padding for ScrollFrames

110530
------
* C-slots only attach to blocks' tops (no longer also to bottoms)

110531
------
* ReporterBlockMorphs

110628
------
* World menu in every Morph's developersMenu
* changed the standard to "sharp shadows" because of Firefox5 bug

110630
------
* StringMorphs and TextMorph notify their parents of layout changes
* TypeInSlotMorphs (round - %n - and rectangular - %s -)

110705
------
* block specs

110706
------
* BooleanSlotMorphs (%b)
* Color mixing
* contrast setting for SyntaxElementMorphs
* exit confirmation

110707
------
* BlockMorph color changing
* entry field tabbing (Firefox and Opera only)
* label multi-line wrapping for command blocks

110708
------
* extrapolate blockSpec upon label part drop

110711
------
* optional intra-block-label word wrap (flag) layout setting

110712
------
* rectangular reporter layout
* label mutli-line wrapping for reporters
* user-definable label line breaks (%br)
* font size customizable for individual menus
* ArrowMorphs

110714
------
* optional drop-down menu for type-in slots
* read-only menus for type-in slots (%inst, %var, %lst, %obj, %eff,
  %dir, %cst, %snd, %key, %idx, %msg, %att, %fun, %typ)
* global pixel color sensing
* renamed TypeInSlotMorph to InputSlotMorph

110718
------
* ColorSlotMorphs (%clr)
* collision detection groundwork

110719
------
* high-level documentation and code comments
* optional blurred slot shades (off by default)

110720
------
* HatBlocks

110721
------
* scrollBarSize can now optionally be specified individually
* block highlighting
* specs for any-unevaluated and Boolean-unevaluated inputs

110722
------
* stringField settable as numeric, supresses textual input
* editable numeric input slots supress textual type-in
* evaluation helper methods and properties
* collision detection

110726
------
* MultiArgMorphs (%mult%x)

110727
------
* Morphic: fullBounds() now ignores hidden submorphs
* MultiArgMorphs: Optional label and minimum inputs settings, '%inputs'
* Morphic: simplified BoxMorph rendering
* Same-colored (white), semi-transparent reporter drop feedbacks

110804
------
* evaluator: ThreadManager, Process, StackFrame, VariableFrame

110810
------
* nasciturus: objects, gui

110811
------
* Morphic: broken rect fix for float-positioned Morphs
* Blocks: straight bottom edges for stop-blocks
* PenMorph: round line ends

110816
------
* Morphic: SpeechBubbleMorphs and bubble help for menus/buttons

110817
------
* Threads: evaluating reporters
* showValue bubbles

110818
------
* optimizations for menu bubble help and Blocks layout

110823
------
* Sprite-scoped variables

110824
------
* numerical virtual keyboard (pop-up-sliders - taken out again)
* sliders now work with negative floor numbers
* mouse wheel scroll events (thanks, Nathan!)

110826
------
* TemplateSlotMorphs (%t, %mult%t, %scriptVars)
* script variables
* lockable inputs

110911
------
* Morphic: PenMorph.setHeading() fixed

110912
------
* Threads: renamed StackFrame to Context
* Blocks: persistent input default values

110913
------
* basic Lambda primitives
* basic Lambda visualization (showBubble)

110914
------
* c-slots in primitives are now static by default
* basic THE BLOCK, CALL and REPORT

110919
------
* formal parameters
* recursion
* closures

110922
------
* implicit parameters

110923
------
* error catching for block evaluation

110926
------
* basic message broadcasting
* thread forking (LAUNCH block)

110927
------
* WAIT block

110928
------
* GLIDE block

111006
------
* force yield after timeout

111007
------
* swooshy hat block tops (instead of circle segments)

111009
------
* call/cc

111010
------
* hybrid scope

111012
------
* autolambdafying CSlotMorphs (C-shaped) and CommandSlotMorphs (inline)
* Morphic: right mouse click emulation for Mac

111017
------
* another take on continuations

111019
------
* Morphic: scrolling speedup

111020
------
* unevaluated FunctionSlotMorphs (%f)
* autolambdafying ReporterSlotMorphs (%r, %p)

111021
------
* GUI: CellMorphs (for stage watchers)

111025
------
* GUI: WatcherMorphs
* SHOW VARIABLE, HIDE VARIABLE blocks

111026
------
* Blocks: empty choice for input drop down menus
* automatic positioning of new watchers
* watchers on temporary variables are deleted by HIDE VARIABLE block (not hidden)
* HIDE VARIABLE with empty input deletes all watchers on temporary vars

111027
------
* more extensive Error catching
* slider for numerical text entries in "mobile mode"
* bigger blocks in "mobile mode"

111031
------
* new: widgets.js
* PushButtons

111102
------
* Morphic: StringMorph shadows

111103
------
* widgets: ToggleMorphs (check boxes and radio buttons)
* non-variable watchers
* checkbox toggling for variable watchers

111108
------
* Lists

111109
------
* ListWatchers (basics)

111111
------
* Morphic: visibleBounds() bug fix

111114
------
* Morphic: fullImageClassic() for ListWatcherMorphs
* Threads: MultiArgMorph now use Lists instead of JS-Arrays
* List Blocks
* GUI: adding/removing variables doesn't make the palette jump to the top
* Blocks: list type slots

111115
------
* Morphic: more tolerant grabbing
* Lists: synchronized Watcher updating (speed-up)

111116
------
* Lists: conservative watcher updating (speed-up)
* GUI: logo pane and 'about' box

111118
------
* Lists: watcher shows list range (speed-up, stability)

111121
------
* Atomicity (WARP)
* REPEAT UNTIL
* WAIT UNTIL

111123
------
* hybrid lists (arrayed and linked)
* CONS and CDR

111124
------
* layout optimization for dropped and snapping blocks (thanks, John!)
* Equality testing for lists (thanks, Brian!)

111128
------
* layout optimization merged into Morphic.js -> trackChanges

111129
------
* Widgets: DialogBoxMorph basics

111130
------
* Widgets: AlignmentMorphs
* keyboard events for DialogBoxMorphs

111202
------
* Widgets: InputFieldMorphs
* Prompters based on DialogBoxes
* Renaming of input templates
* Morphic keyboard enhancements

111205
------
* new primitives: MOUSE X, MOUSE Y, TIMER, RESET TIMER

111207
------
* byob.js (CustomBlockDefinition, CustomCommandBlockMorph)

111209
------
* BlockEditor basics for CustomCommandBlocks

111212
------
* BlockDialogMorph (basics)
* CustomReporterBlockMorph

111213
------
* call/cc for lambdas and custom blocks

111214
------
* feature: deleting block instances and custom block definitions

120106
------
* InputSlotEditor basics
* bigger tick for radio buttons
* PushButtons redone for WebKIT 2 compatibility

120109
------
* Morphic: single quote input for WebKIT 2 compatibility
* BYOB: BlockInputFragmentMorphs

120115
------
* BlockLabelPlaceHolderMorphs
* BlockInputDialogMorph (short form)

120119
------
* MOD, TRUE and FALSE reporter blocks
* AND, OR, NOT reporter blocks
* BROADCAST AND WAIT command block

120120
------
* Morphic: question mark input for WebKIT 2 compatibility (does it break on Windows?)
* Morphic: turtle tracks round endings for WebKIT 2 compatibility (cannot use closePath())

120123
------
* Threads: tail call elimination

120125
------
* STORE: serializing, saving and loading projects, first pass, all by Nathan
* HatBlock bezier curve fixed width
* settings for AlignmentMorph regarding handling of hidden Morphs
* GUI enhancements
* input slot long form dialog variant outline
* pointless filters in most FORINS in response to Nathan's derogatory comments :-)

120127
------
* input slot long form dialog - basic (single) input types

120130
------
* input slot long form dialog - multiple inputs
* input slot long form dialog - default input values

120131
------
* upvar GUI in input slot long form dialog (w/o upvar functionality)

120201
------
* upvars in %var slot drop-down menu

120202
------
* more primitives in Motion, Looks and Pen categories

120203
------
* Morphic: horizontal mouse wheel scrolling (thanks for this fix, Nathan!)
* more primitives in the Pen category

120206
------
* Morphic: color specifiable in String() constructor
* Widgets: ToggleButtonMorphs
* Objects: block categories
* GUI: tabbed palette mock-up (not yet within a real GUI)

120207
------
* BYOB: categories (colors) for new custom blocks

120208
------
* categories and block type editing for existing custom blocks

120209
------
* Morphic: formatting capabilities for Menus and ListMorphs
* Morphic: optional 'own properties' highlighting in the Inspector's "show" menu

120214
------
* multiple sprites & lots of new stuff in all modules
* Morphic: dragging optimization
* Nathan's fixes to Morphic (shadow fix, mouse wheel fix)

120215
------
* scriptable and programmable stage, selectable in the corral
* stage watchers with "active", auto-updating object name labels
* IF ON EDGE BOUNCE primitive, still buggy
* GUI fixes, all frame morphs in the corral now reject object drops

120216
------
* saving & loading, xml serialization, thanks, Nathan!

120217
------
* Morphic: introducing combined mouse-keyboard events
* GUI: Project label

120221
------
* user and development modes (shift-click on Snap! logo)
* Open Project dialog (thanks, Nathan)
* blocks caching for primitives and custom blocks
* custom block prototype edits visible in the palette while editing
* sprite duplication
* custom block definition duplication and re-binding
* the only sprite in the IDE is now deletable
* primitive blocks for GHOST effect

120222
------
* Morphic: Tabbing among input fields fix
* Threads: REPORT primitive fix

120224
------
* STOP BLOCK primitive
* error catching turns off in development mode (on in user mode)

120226
------
* primitive control structures adjusted to new REPORT rule

120229
------
* global variables
* hybrid lists CDR fix (thanks, Brian!)
* debugging primitives (alert, console.log) in development mode
* all libraries edited to conform to JsLint's latest petty rules ('else' after 'return')

120301
------
* store.js: color slot and global vars patch (thanks, Nathan!)
* blocks.js: bug fix for drop-down menus (wouldn't allow selecting empty)

120305
------
* upvars
* globals vars serialization fix
* MultiArgs: shift-clicking on an arrow repeats action 3 times

120306
------
* Morphic: prevent text edits from reversing
* added "WITH INPUT LIST" variants for RUN/LAUNCH/CALL primitives - commented out
* changed '%inputs' slot type to non-static (makes "w/input list" redundant)
* Threads: fixed tail-call optimization induced bug in pushContext()
* WHEN I AM CLICKED hat block (control)
* WHEN KEY PRESSED hat block (control)
* MOUSE DOWN? predicate (sensing)
* KEY PRESSED? predicate (sensing)

120307
------
* object collision detection (TOUCHING? predicate block for Sprites)
* poly-key state detection

120308
------
* Morphic: SpeechBubbleMorph orientation left/right
* Threads: empty block definitions no longer raise an exception
* SAY primitive command block for Sprites

120309
------
* SAY _ FOR _ SECS primitive command block for Sprites
* Morphic: thought bubble display variant of SpeechBubbleMorph
* THINK and THINK FOR SECS primitive command blocks for Sprites
* STAMP primitive command block for Sprites
* ROUND, JOIN, LETTER OF, LENGTH OF, UNICODE OF and UNICODE AS LETTER primitive reporters

120313
------
* Widgets: ToggleElementMorph, TabMorph
* BlockEditor: Pictographic type buttons
* IDE: Tabs for scripts/costumes/sounds

120314
------
* JOIN becomes variadic (Jens isn't enthusiastic about it)
* About text changed according to Mitch's suggestion
* BYOB: JaggedBlockMorph
* pictographic type buttons in the short form input dialog

120315
------
* Morphic: colored shadows
* Widgets: ToggleMorph with embedded toggle elements
* pictographic slot type buttons in the long form input dialog
* palette speedup
* Error message when RUN/CALL/LAUNCHing a block w/o passing the expected no. of inputs
* Illegal drops prevented in user mode (enabled in dev mode)

120316
------
* long form input dialog speedup (pictograms are now plain pictures instead of Toggles)
* Morphic: Morphs behind another one no longer receive mouseEnter/mouseLeave events
* Blocks: ScriptPanes behind other Morphs no longer show drop target feedbacks

120319
------
* THREADS: unevaluated inputs
* Morphic: detect and respect minimum font size renderable
* Morphic: text selection display fix for FF

120320
------
* Morphic: droppedImage() event

120321
------
* Costume, CostumeEditorMorph, CostumeIconMorph

120322
------
* GUI: WardrobeMorph
* Slider and ScrollFrame colors

120323
------
* Morphic: handle multiple image file drops

120327
------
* Costumes, first iteration

120328
------
* Costumes: rotation center functionality

120329
------
* Sprites: the rotation center now is the pen tip

120331
------
* Stage: extra pen trail layer
* Morphic: texture handling (eliminating canvas patterns b/c of Chrome problems)
* Objects: motion precision fixes

120401
------
* settings menu: touchscreen settings
* thread safety option
* store.js: Costumes & pen trails support. Thanks, Nathan!
* context menus for watchers (thx, Nathan!)

120402
------
* pressing the stop sign makes all speech bubbles disappear
* null continuations now behave the same as STOP SCRIPT blocks

120403
------
* minWidth property for SyntaxElements

120406
------
* ASK/ANSWER for sprites

120403
------
* ASK/ANSWER for the stage

120416
------
* custom block prototype slot type and default value indicators
* Sounds, first pass (thanks, Ian!)

120417
------
* Snap! Build Your Own Blocks. Alpha

120420
------
* Rings (basics)

120424
------
* Rings (first pass completed)

120425
------
* unringify menu item for Blocks
* evaluator: variable setters can refer to variables by their reified getters

120430
______
* zebra coloring (first pass)

120502
------
* settings menu item for toggling zebra coloring
* new thumbnail() for StageMorph
* store.js: Fixes for local storage in local instance ("airplane saving")

120503
------
* text- and object- type slots (and hints)
* zebra coloring fixes for input slots with pull-down menus
* costume flipping
* rotation styles

120504
------
* rotation style support for sprite "turtle" costume
* rotation style buttons hidden for stage
* export background-less pictures of scripts
* sprite draggability control checkbox (in the IDE's sprite bar)

120507
------
* reification: omit empty slots inside nested lambdas for implicit parameters
* display fixes for rings inside rings
* DISTANCE TO reporter block primitive in the sprite's sensing category

120509
------
* exporting projects (holding the shift key URI-encodes the XML)

120514
------
* Morphic: droppedText() event
* GUI: opening project files via drag & drop
* GUI: invoking the file dialog to open projects, import costumes and sounds
* Threads: nested upvar fix
* Threads: hybrid variable scope taken out (it's all lexical again for now)
* Blocks/BYOB: zebra-coloring related fixes

120515
------
* GUI: disabled file dialog for now due to some issues
* Blocks/BYOB: Prototype block zebra coloring adjustment
* Store: minor fixes in the blocks dictionary

120516
------
* monadic OF primitive block in the operators category

120518
------
* Morphic: better keystroke detection
* new interpolating HTTP reporter in the sensor palette

120521
------
* Pinch-Zoom for touchscreen devices
* Virtual keyboard for touchscreen devices

120522
------
* Morphic/Blocks: SlideBackToFormerSituation

120523
------
* Morphic: single-touch-and-hold pops up the context menu
* Morphic: pinch-zoom and virtual keyboard improvements

120525
------
* late-binding custom blocks, changes in threads.js, byob.js and store.js (et al.)

120611
------
* Morphic: auto-detect Chrome issue 90001 and set "useBlurredShadows" appropriately
* Blocks: solid block highlighting (as in Scratch 1.4) when "useBlurredShadows == false"
* GUI: Settings menu entry for blurred / solid shadows and highlights
* Threads: Type checking, <IS [] A [] ?> primitive in the operators category

120612
------
* global custom blocks (first pass, no serialization yet)

120613
------
* new module: xml.js, a simple XML DOM/encoder/parser for Morphic.js

120614
------
* store.js: Global vars fix (xml.js deprecated)

120615
------
* store.js: Stage vars (watchers) fix
* store.js: Empty (bodiless) custom blocks fix
* store.js: Global custom blocks support

120618
------
* GUI: Screenshot feature
* GUI, store.js: Error catching turned off in dev mode (for debugging store.js)
* store.js: saving / loading of sprites' scale, draggability and rotation style
* Morphic/GUI: Virtual keyboard support can be toggled (to hide caret in Opera etc.)
* GUI, store.js: Saving / loading of "thread safety" setting
* blocks caching limited to primitives
* introducing palette caching

120619
------
* store.js fixes for empty, non-editable input slots (e.g. list and boolean slots)
* objects.js/byob.js fixes for editing recursive custom blocks

120620
------
* Morphic/Blocks: More precise control over where reporters are dropped and snap
* Morphic documentation update

120621
------
* POINT TOWARDS and GO TO primitive command blocks in the motion category

120622
------
* changed license to AGPL (all modules and documentation)

120625
------
* objects fix: changing pen properties sometimes offsets the sprite
* blocks: variable slots no longer accept reporter drops (Jens regrets but doesn't agree to auto-ringify dropped variable blobs at this stage of development)
* blocks: better (yet) control over where reporters can be dropped
* blocks fix: sometimes reporters cannot be dropped into slots in the block editor
* threads: comparing strings (the = block) is now case-insensitive
* threads/blocks: multi-args can now be eval'ed with variadic inputs
* lists: equality testing fix for mixed linked/arrayed lists (thanks, Brian!)
* LIST primitive with new, static input spec
* store: stage watcher styles (small, large, slider) are now persistent thru save/re-load
* objects: stage watcher slider min/max is now settable thru context menu
* store: stage watcher slider min/max are now persistent through save/re-load

120626
------
* blocks/threads fix: "any unevaluated" slots now reify their typed-in input values
* byob/threads fix: custom block definition reification now ignores empty-slot bindings
* GUI: copying scripts among sprites via drag & drop on corral icons (first rough version)

120627
------
* blocks/store/objects/threads fix: STOP BLOCK gets converted to REPORT on save/reload
* byob/GUI: new entry in the settings menu to always show input dialog in long form
* blocks/GUI: new entry in the settings menu to prefer empty slots for reporter drops
* blocks: in scripting areas rings and variable reporters can be nested inside each other
* in general rings will not vanish on ring/var drop if already inside other rings
* context menu help feature for blocks

120628
------
* GUI: re-ordering costumes via drag & drop
* GUI: copying costumes among sprites via drag & drop on corral icons

120629
------
* Morphic: StringMorphs now have the option to visualize blanks (as colored dots)
* Blocks: all input slots (in blocks) are now visualizing blanks
* GUI: re-ordering sounds via drag & drop
* GUI copying sounds among sprites via drag & drops on corral icons

120702
------
* store fix: Newly loaded projects did not get keyboard events (now they do)
* threads fix: Evaluating STOP ALL did not stop sounds (now it does)

120703
------
* GUI: open a project from URL via #open:URL
* GUI: run a project from data via #run:XML or from URL via #run:URL

120704
------
* major refactoring of serialization (new xml.js, store.js)

120705
------
* store: stage watchers monitoring lists remember their dimensions

120709
------
* xml decoding fix
* app mode, first rough pass (no stage scaling yet)

120710
------
* app mode related adjustments to blocks.js, gui.js and threads.js
* fix: line breaks in project notes are now preserved thru export/import (xml)

120711
------
* app mode: arbitrary stage scaling (auto-resizes to fill the browser's client area)

120712
------
* small stage mode (for bigger scripting area, e.g. in lectures or on mobiles)

120713
------
* objects fix: zero values now show up in watchers (are no longer blank)
* objects fix: dragged sprites now keep their correct relative stage coordinates
* threads fix: dragged sprites are identifiable by running scripts

120716
------
* Morphic scroll frames: customizable "growth" property, used in scripting panes
* store: Sprites' visibility state gets persisted thru save/load
* store: Watchers' visibility attribute format now same as sprites' (hidden="true")
* BYOB fix: Custom block prototype rendering fix when opening a Block Editor instance
* blocks fix: Predicate slots no longer turn into reporter slots upon save/load
* blocks fix: made dropping reporters into empty slots easier when preferring empty slots

120717
------
* costumes/sounds: omit filename suffixes when importing
* costumes/sounds: rename via context menu
* costumes: export via context menu
* thumbnails: are now centered within their widgets

120718
------
* fix: catch nil inputs in motion and looks primitives
* fix: answer variable value Boolean false not as zero
* GUI: window-reflow adjustments
* store fix: Booleans retain their type thru save/load (not converted to Strings)
* threads fix: using REPORT/STOP BLOCK inside a WARP block now stops warping

120719
------
* graphic effects (currently only "ghost") for the stage
* new feature: Pen trails collision detection
* fix: Keystroke detection

120720
------
* fix: textify zero and false values in JOIN primitive (don't skip)

120723
------
* Color collision detection (first rough pass)

120724
------
* Color collision detection & thumbnail adjustments and fixes, incl. helpscreens

120725
------
* fix: SET PEN COLOR no longer offsets the sprite
* settings menu: optional input sliders (for Android)

120726
------
* REPORT primitive moved to STOP blocks in palette
* graphical representation of Boolean values in watchers and bubbles
* fix: empty numerical input slots evaluate to zero (thanks, Stephen!)

120728
------
* speech bubble scaling
* Boolean value representations in operator color (green)
* eliminated "ring" type

120730
------
* adjust REPORT / STOP BLOCK semantics (special case implicit C-shaped slot lambdas)

120731
------
* lists fix: preserve zero/false values when assigned in list blocks
* threads refactored (eliminated now redundant context.isInsideCustomBlock attribute)
* blocks/byob: mutable formal parameters for custom block definitions and rings
* threads: CHANGE VAR typecasting bug fixed

120801
------
* JOIN can now have any number of input slots, and be CALLed with an input list

120802
------
* threads: Invoking a lambda with empty input slots without arguments binds them to ''
* blocks/gui/byob: MultiArg layout fix
* "Clicking sound" option in the settings menu

120803
------
* blocks fix: enable reporter drops on empty rings in "prefer empty slot drops" mode

120806
------
* blocks: SymbolMorph replaces Unicode characters for "green flag" and "stop" signs
* widgets: allow SymbolMorphs as button labels, new layout rule: minLabelExtent for buttons
* gui: button layouts moved to minLabelExtent rule
* fix: prevent drops on multi-arg arrows
* SymbolMorphs for all items in the GUI's tool bar

120807
------
* SymbolMorphs for object type slot and identifier, and for "new sprite" button
* Verdana font preference for block labels (wider)
* store fix: Watcher label for "answer" now survives save/load (Thanks, Tom!)

120808
------
* Morphic, GUI, blocks, BYOB: More "gentle" font control (can be overridden by browser)
* BYOB: new "Apply" button in the block editor (updates definition keeping editor open)
* BYOB: editing custom block prototpyes preserves existing inputs in custom block instances

120809
------
* Pause button: Pauses/resumes all currently active stage processes (scripts)
* blocks: minor performance tweaks

120810
------
* blocks: bug fix for input accessing in variable drop-downs
* dev-mode reporter for STACK SIZE for tail-call-elimination monitoring

120813
------
* dev-mode reporter for FRAMES for thread performance monitoring
* minor refactoring of store.js to conform with the latest JSLint

120814
------
* fix: disappearing and undraggable sprite bug (thanks, Kirk!)
* widgets: ToggleMophs can now have two different labels/symbols to reflect their state
* gui/blocks: switching symbols for all toggles, re-introducing the green flag symbol

120815
------
* octagonal stop sign symbol
* cache manifest
* SWITCH TO COSTUME (-1) goes back one costume in the list & wraps around
* Variable blobs can be renamed

120816
------
* SNAP! Connection Strategy
* OS-native File Dialog for importing projects, pictures, sounds (also for Safari 6)

120830
------
* custom block definition export (disabled for now)
* zebra-coloring fix (for Hummingbird-video bug)
* any number of script vars possible

120910
------
* exporting global custom blocks (beginning)
* byob.js: BlockExportDialogMorph (beginning)

120911
------
* exorting & importing global custom blocks

120912
------
* serialization adjustments (app attribute in top-level XML node)
* same-named custom block conflict detection and resolution
* overloading of custom blocks with samed-named imported ones
* cascaded block library support (block sets depending on each other)

120913
------
* morphic.js: Refactoring to conform with JSHint's line breaking checks
* new morphic.txt documentation version
* new version of "Contributing to BYOB4" guideline with section on coding style
* exporting & importing sprites

120914
------
* store.js: fix for loading variables containing reporters and unevaluated inputs

120918
------
* comments (non-sticky)
* ScriptsMorph duplicating fix
* block editor cleanUp fix (prototype hat always stays on top)
* block editor persistence of free-floating objects (scripts, comments)

120919
------
* store.js: minor fixes
* gui.js: URL #open: feature now works with all importable resources (e.g. blocks)

120920
------
* js: blocks, byob, morphic, objects, threads, widgets edited for latest JSLint

120924
------
* threads.js fix for REPORT inside C-Slots (pop another frame under certain conditions)

120925
------
* xml.js: escape tilde character to avoid file corruption thru serializer.store()

121002
------
* basic localization mechanism, use settings menu to switch languages
* German translation (for testing), #lang:de launches Snap! localized

121004
------
* Morphic: triggering "reactToEdit" when text editing is terminated

121010
------
* generalized localization hooks merged into Morphic.js and Widgets.js
* Morphic: TextMorphs (multi-line strings) now support text shadows (used in widgets)

121015
------
* Morphic: New "reactToKeystroke()" events are escalated when editing strings/texts
* Blocks, Threads, Objects, Store: InputSlots now have localizable menu options
* GUI, Locale, lang-de: localization re-organized (now considered complete for LTR)

121016
------
* fixed clicking sound entry in the settings menu
* input slots are now deselected on losing focus
* fix: Cannot delete the only label part in a custom block prototype anymore
* button acknowledgement label now spells 'OK' instead of 'Ok'
* fix: Cannot create unnamed ('') variables anymore
* fix: ScriptVariables' names' spaces are now normalized & can't be set to empty ('')
* changed wording of "Import" tooltip
* Thanks, Nathan, for spotting and reporting these bugs!
* added localization for block definition deletion and about dialogs
* edits in the sprite name field no longer need to be acknowledged by pressing <enter>
* new file: Translation Guide (translating Snap.txt)

121017
------
* Italian translation! Woohooo, thanks, Stefano!
* added "unringify" to translator dictionary, thanks, Stefano!
* fixed a require() bug in XML, thanks, Nathan!
* fixed #run: URL switch. #run: is now officially supported!

121018
------
* minimal translation dict updates ('rename costume' and 'rename sound')

121019
------
* the costumes tab now also displays the default "Turtle" icon symbols
* fixed a small scoping bug in Morphic's touched event (thanks, Davide!)
* new version of lang-it.js (thanks, Stefano!)

121022
------
* Japanese(Kanji and Hiragana) translations! Woohooo, thanks, Kazuhiro Abe!
* IF ON EDGE BOUNCE fix. Thanks, Stefano!
* additional localization strings and snap.html fix, thanks, Kazuhiro Abe!
* global / local watcher label fix. Thanks, Nathan!
* Morphic: Text scrolling when editing. Thanks, Nathan and Stefano!
* Morphic: Took out WorldMorph.trailsCanvas handling, thanks, Davide!
* Morphic text rendering ascender space fix (+ adjustments mostly everywhere)

121023
------
* added "Edit label fragment" to translator dictionary
* minor fix in language changing mechanism
* minor fix re. block rendering (hole erasing) b/c of new ascenders
* minor fix re. dialog box rendering b/c of new ascenders
* minor fix re. dialog box shadow rendering. Thanks, Brian, for spotting this!

121024
------
* sprite sequence in corral can be ordered via drag & drop (& persists)

121025
------
* Korean translation! Woohooo, thanks, Yunjae Jang!
* Portuguese translation! Wohoo, thanks, Manuel Menezes de Sequeira!
* Morphic optimizations in FrameMorph and InspectorMorph, thanks, Davide!
* removed defunct "Open Projekt" entry in lang-de.js, thanks, Manuel!

121026
------
* fix: Process inputOption() backward compatibility for localizable drop-down options

121029
------
* Czech translation! Woohooo, thanks, Michael Moc!
* translations now dynamically load and unload. Thanks, Nathan, for the hint!
* Morphic now supports <cmd> + a on Macs, thanks, Davide!

121030
------
* Morphic: allow edited text scrolling to be disabled

121105
------
* GUI, Objects: Pressing <enter> triggers the green flag, <esc> the red stop sign

121106
------
* Morphic: Menu re-vamp, now supporting multi-line items, icons, and icon-text pairs

121107
------
* Morphic: new slider edit event, updated documentation (text editing)
* blocks, GUI: New "Execute on slider change" option for "live coding"

121109
------
* Widgets: fixed minor rendering bugs for dialog boxes
* GUI, Blocks: changed control bar layout, added cloud button (under construction...)
* new module stub: cloud.js (likewise under construction)

121112
------
* Simplified Chinese translation! Wohoo, thanks, 邓江华 !

121114
------
* first experimental Web Audio API version, sine-wave only. Thanks, Achal!
* new blocks: TEMPO, REST FOR n BEATS, PLAY NOTE, CHANGE TEMPO, SET TEMPO
* currently only fully supported by Safari

121115
------
* WARP block moved up in Control palette (for better discoverability)

121116
------
* Esperanto translation! Woohoooo, thanks Sebastian Cyprych!
* a few additional localizable strings
* store.js: "Obsolete!" Reporter fix, thanks, Nathan!
* Morphic.js: support for dropped binary files
* .ypr project loading, Whoa! Awesome, Nathan!!
* French translation stub! Thanks, Jean-Jacques Valliet!

121119
------
* blocks context menu: duplicate "this block only" feature
* blocks context menu: relabel feature
* blocks context menu: ringify / unringify misplacement fix
* Morphic: MenuItem icon shadow dimension adjustments
* store: fixes STOP ALL block spec
* added some more translation strings
* updated Korean translation

121120
------
* major refactoring of blocks dict and blocks generation code
* new "show all entry in the stage's context menu

121121
------
* Morphic: fixed reactToEdit() event trigger -> fixes scrambled sprite names
* Threads: hide / show variable watcher fix for watchers on globals
* Threads: Process reentrancy fix for played notes in non-thread-safe mode
* Store: global watcher load fix
* Store: Sprite ordering fix for Safari
* Objects / GUI / Blocks: fix for "relabel"

121122
------
* Blocks: right click delete reporter fix (restores slot), thanks, Ryan!
* Blocks: restore zero-value default fix
* Objects Fix: Variable blobs become undraggable on save / load. Thanks, Ryan!
* Morphic: enable all keys for text input (take out legacy browser support)
* new "Animations" option in the settings menu
* zooming the stage in & out now animates depending on the user's preference

121123
------
* Blocks: C-Slot rendering fix (eliminate occasional transparent line)
* Store, GUI: Beginnings of the Cloud data format (in progress...)

121127
------
* Morphic: SpeechBubbleMorph shadow artefact fix
* Morphic: Backtab support & entry field tabbing ("wrapping") fix
* Objects: List watchers inside speech bubbles are resizable again
* Store, GUI: Cloud data formats (separating media from program data)
* Store: Fix for saved "obsolete" blocks (projects can be re-loaded)
* new Operators primitive: IS IDENTICAL TO?
* new translation string for new primitive
* Simplified Chinese translation update
* BYOB, Objects: global custom block refresh fix

121128
------
* Morphic: Interactive Tooltips ("isClickable" and resizing support for SpeechBubbleMorphs)
* Blocks: list watchers inside evaluation bubbles are now interactive
* Store: The user-edited name for the stage is now persistent
* Store: Cloud Data Format fix - mediaIDs are now independent of sprite sorting and layer
* French translation update

121129
------
* Store: Cloud Data Format now references media by its name, obliterating the need to re-save media when reordering wardrobes or jukeboxes, but relying on unique names (within each sprite or the stage)
* Store: serializing / de-serializing of media in different receptacles
* Morphic: CTR-Z / CMD-Z for undo in text input fields
* Morphic: SHIFT-arrows selects text in input fields
* Morphic: new global method sizeOf(object) returns number of keys
* Morphic: redundant (quasi-inherited) code taken out of TextMorph
* GUI: "hasChangedMedia" property for IDE_Morph (Cloud Data Format support)
* GUI: When a sprite's current costume is deleted, it switches to the default one

121203
------
* GUI, BYOB: tools module can be imported from the project menu
* Morphic: enhancement for editing non-left-aligned texts
* Morphic: minor text element fix for initial mouse down behavior
* Lists, Objects: text elements in list watcher cells are now editable
* Lists fix: comparing something with a non-existent list element no longer produces an infinite loop, thanks, Aleks, for reporting this!
* dynamically load ypr.js when first needed
* minor translation strings updates

121204
------
* Morphic: text element mouse event propagation fix (list boxes)
* Lists: Empty list element follow-up fix
* Threads: Returning "undefined" to parent frame fix (caused type errors)

121205
------
* Morphic: trigger "reactToEdit()" when tabbing among text fields
* GUI: display tool's name when importing the module

121207
------
* Blocks: Drop target feedback for comments (in preparation for sticky ones)
* Objects: redraw turtle on pen color change, disable clicking on watchers

121208
------
* Objects: SAY nothing bug fix. Thanks, Brian!

121210
------
* Sticky comments (attachable to blocks in main scripting area)

121211
------
* better alignment for sticky comments
* cloud api work

121213
------
* "elastic" anchor lines for sticky comments
* cloud api work

121217
------
* cloud api work
* Morphic: auto-text selection fix
* all modules: replaced tabs for spaces
* "Clean up" now arranges sticky comments correctly

121219
------
* Threads, Cloud: switched most XMLHttpRequests to asynchronous (except URL switches)
* Morphic: Allow StringMorphs to hide their characters for password input
* Widgets: Login-Prompter
* cloud api work

130107
------
* Slovenian translation!! Yay, thanks, Sasa!!! (Snap now supports a dozen languages!)
* list-colored drop "halo" for variadic inputs
* most modules: space / tab white space reformatting
* help screens!! Thanks, Brian!!!
* help screen API for custom blocks (currently only for the tools library)
* importing libraries is now "silent", i.e. it doesn't show a dialog letting you select which blocks to import anymore.

130108
------
* Blocks: ArgLabelMorph. Dynamic labels for "kicked out" variadic inputs ("input list")
* Dynamic input label support in BLOCKS, STORE, THREADS, BYOB, GUI and LOCALE
* Blocks, BYOB: Zebra coloring fix for rings in grey blocks

130110
------
* "input list:" (with colon)
* Blocks: Drawn symbols for TURN RIGHT / LEFT
* continuations tweaks
* revert of "returning 'undefined' to parent frame fix" (121204), breaks call/cc
* ScriptPane cleanUp tweak for attached comments

130111
------
* Morphic: StringMorph leftClick event error catch

130115
------
* Threads, Blocks: Continuations tweaks (enabling reporter - CATCH / THROW)

130116
------
* Store, GUI: Cloud Data Format support
* Lists: CONS fix for zero CAR value

130117
------
* "Reference Manual" entry in the Snap! Menu
* BYOB: Editing custom-block-prototypes only changes the prototype in the block editor (no longer every instance of the block), pressing OK or APPLY propagates changes to all block instances, pressing CANCEL does nothing (no longer reverts previously edited slots in instances back to their default state)

130118
------
* new YPR version. Thanks, Nathan!
* Blocks: fixed "sometimes list watchers can be dragged out of value feedback bubbles"
* BYOB/Blocks: fixed restoring existing inputs and upvar names when editing custom blocks

130121
------
* Threads: No more type coercion when setting a variable's value, instead only when incrementing it

130122
------
* Symbols for local storage and for examples
* Cannot evaluate to null or undefined within an argument -> use empty string instead

130123
------
* Import / Export text files from variable watchers (context menu)
* Max. size of displayed text in CellMorphs and value bubbles set to 500 characters

130125
------
* Morphic: Better padding support for ScrollFrames
* Morphic: Better resizing & re-rendering support for Menus and ListMorphs
* Morphic: Inspection improvements for Menus and ListMorphs
* Morphic: Text scrolling improvements (scrollCursorIntoView())
* Widgets: Rendering improvements for InputFields
* BYOB: changed all 'Ok' occurrences to 'OK'
* Threads, Lists: JOIN zero / false bug fix
* GUI: new ProjectDialogMorph

130129
------
* Cloud: persistent log-in and auto-log-in
* GUI, Widgets: Cloud work...
* Morphic: "pic..." generic exporting feature

130201
------
* Blocks: Context-menu-delete fix for CommandBlocks inside C-Slots: userDestroy()
* Morphic: Pen-redraw() optimization for warp() fix
* Cloud: Dual-component project optimization
* GUI: <enter> key now works with ProjectDialog

130202
------
* Morphic, Objects, GUI, Store: "turtle costume pen" options (tip, middle)

130204
------
* fast tracking, a.k.a. "Turbo Mode"

130205
------
* Cloning, basic Scratch style, still *very* experimental

130205
------
* Cloning collision detection refinements, still *very* experimental

130211
------
* Fixed / Variable Frame Rate option in the settings menu (default is fixed, as in Scratch)

130213
------
* GUI, Widgets: Cloud frontend complete
* OF reporter block in the sensor palette (Scratch functionality, not yet BYOB)
* CLONE block now takes sprite name or 'myself' as input, drop-down menu
* FAST TRACKING renamed to TURBO MODE
* unscheduled execution again made the default.
* "Prefer smooth animations" setting, runs strictly scheduled at around 30 fps max.
* scheduling mode saved in project data
* Settings menu clean-up
* Input slots in Hat blocks are now static (cannot receive reporters drops)

130214
------
* clone drop-down menu fix (removed "close" entry)
* auto switching to small stage mode if the window gets narrow. Commented out b/c I don't like it
* changed costume name 'Turtle' to 'default'
* link to s.b.e/tos.html in signup dialog
* "Save project to disk" experimental feature (works currently only in Chrome)
* RUN variable OF sprite fix

130215
------
* Store: Sprites are now first class stored objects (can be "values"), needed for OF block
* Blocks, GUI, Threads: "Turtle" and "Empty" costume names, gosh, Brian!
* Threads: Error messages fix

130218
------
* SVG_Costumes (partial)
* Cloud work
* scaling during WARP glitch fix

130221
------
* Cloud work: Connect / Reconnect mechanism and password hashing "salt"
* Exporting SVG_Costumes

130222
------
* Objects: Fix for playNote distortion issue in Chrome

130225
------
* Extended Signup dialog (COPPA-conforming, I hope)
* Morphic: mouse click event bubbling for input fields
* Widgets: Optional drop-downs for input fields

130227
------
* Morphic: onNextStep and nextSteps() mechanism
* GUI, Cloud: Ersatz-progress-bar-messages, using nextSteps()

130228
------
* "Updating..." message while updating the cloud project list
* Morphic: Clipboard "paste" text support (works currently only in Chrome)

130311
------
* Czech translation update, thanks, Michael!
* Morphic: "pic..." fix for scroll panes, thanks, Davide!
* Morphic fix: Clicking on editable text once again moves the caret to the mouse cursor

130312
------
* Threads: OR, AND are now special form primitives ("lazy")
* Threads: fix for minor pen optimization glitch (catching the stage)
* Lists, Objects: Resizing list watchers no longer makes them "tremble"

130313
------
* Store: context receiver persistence fix (for reified scripts)
* Threads: Execute reified blocks in the callee's context (not in the caller's)

130314
------
* GUI: When logged into the Cloud, "cloud" becomes default in the project dialog
* Store: local custom blocks can now store their definition receiver directly as value (avoiding turning them into "Obsolete!" blocks when re-opening the project), this is important for reified blocks assigned to variables elsewhere, and such for the part of OOP we can already do now.

130318
------
* GUI, Blocks, BYOB, Widgets: Scaling Blocks and Scripts (shift-click on settings menu)
* Widets: numerical prompts
* GUI: #signup URL switch
* Blocks: adjusting highlights when modifying active scripts

130319
------
* Blocks: SyntaxElementMorph fixLayout() optimization for active highlights
* Russian translation!! Yay, thanks, Svetlana Ptashnaya!!
* Store, GUI, Blocks: Scaling support for Comments and serialization/deserialization
* GUI: motd support: On startup Snap! looks for http://snap.berkeley.edu/motd.txt, if it exists it is shown in a dialog box
* GUI: fix for #run: URL switch
* GUI: cloudmsg support: cloud related notifications can be put into http://snap.berkeley.edu/cloudmsg.txt

130320
------
* GUI: deactivated motd and cloudmsg mechanism for now (has some issues)
* Updated Portuguese translation, thanks, Manuel!
* Updated all translations for %keyHat and %msgHat specs
* YPR: fixed turnLeft / turnRight swap bug

130321
------
* Cloud: allow every XMLHttpRequest to transport cookies (withCredentials = true)

130322
------
* Widgets: optional sliders and "lively" graphics for numerical prompters
* Blocks, GUI: "Zoom blocks…" feature in the settings menu (no longer hidden)
* Objects: numeric prompters for watcher's sliderMin/Max
* translation updates
* Objects: 'pic…' screenshot feature for the stage
* GUI, Cloud: Fallback message support before showing an error

130325
------
* Spanish translation! Yay, thanks, Victor Muratalla!!
* Objects: Boolean value block representations are now translated, thanks, Victor, for the report
* Simplified Chinese translation update, thanks 邓江华 !!

130402
------
* Japanese translations update, thanks, Kazuhiro Abe!
* Content-type support for Cloud backend
* sharing / unsharing projects support and GUI
* the Block Editor now allows anchored comments
* duplicating a block / script / sprite now also duplicates anchored comments
* deleting a block / script now also deletes anchored comments

130403
------
* YPR converter fix: No more text area in upper left corner of the Snap! IDE
* Blocks, BYOB, Store: PrototypeHatBlocks in the BlockEditor accept anchored comments

130404
------
* loading shared projects in presentation mode, exporting URL for shared projects
* Selecting "Help" for a custom block now pops up the comment attached to its definition's prototype hat, if any
* BYOB fix for detaching comments from prototype hat blocks

130405
------
* renaming variable blobs now features a drop-down with reachable variable names and a picture of the block to be renamed

130408
------
* Cloud, GUI: Sharing / Unsharing projects finalization
* Lists: Adjust initial list watcher size to blocks' zoom scale
* Portuguese and Italian translations update, thanks, Manuel and Stefano!
* GUI fix: switch to edit mode and tab to scripts when loading a project,
* Objects: new feature (hidden in shift-clicked stage context menu): turn pen trails into new costume

130409
------
* various formatting and encoding normalizations
* Morphic: Formatting options for Triggers and MenuItems (and ListItems): bold, italic
* Morphic: ListMorph (items) manipulation capabilites
* GUI: display shared project names bold typed in the project dialog
* GUI: Feedback msg when sharing / unsharing projects
* GUI: Shield (hide) IDE while opening a shared project for presentation
* GUI: Support for debugging shared projects

130410
------
* Fixes for type casting and dragging dialogs by buttons, thanks, Nathan!
* Fix for loading shared projects in different formats (cloud data and plain project data)

130411
------
* Morphic: virtual keyboard enhancements (see Morphic.js)
* GUI: disabled localStorage (as in I9 running locally) no longer prevents Snap! from loading

130412
------
* Lists: fix for typecasting bug in CONTAINS
* BYOB: Tooltips for custom block templates (sitting in the palette): mousing over a custom block in the palette pops up its definition hat comment in a comment-colored speech bubble
* GUI: Sharing/Unsharing/Deleting now available in all version of the project dialog

130415
------
* Blocks: place sticky comments on World layer on dragging their anchor block 

130416
------
* Cloud, GUI: additional dev settings

130417
------
* Blocks: "scripts pic" option in the ScriptsMorph's userMenu lets you export a picture of all scripts (including comments)

130418
------
* plenty of bug fixes from Nathan. Yay, you go!!

130419
------
* German translation update for "scripts pic" feature

130421
------
* using the percent character in variable names is now safe (fixes Github issue #65)
* Morphic: added Doubleclick support, example: inspectors
* GUI: Double clicking a project in the project dialog performs the dialog's action on it (open / save)

130422
------
* GUI: Double clicking support for cloud side of project dialog

130423
------
* Lists, Objects: Circularity no longer breaks watchers
* Widgets: Multiple Dialogs of the same kind are prevented except for a few (e.g. BlockEditor). Thanks for this fix, Nathan! (and for the many little UI things you've fixed as well)
* German translation update

130424
------
* Widgets, BYOB, GUI: prevent multiple block editors on the same block definition, allow multiple dialogs on different objects, handle dialog instances in DialogBoxMorph.prototype

130425
------
* Objects, Blocks, GUI, Store: Hide primitives feature
* Morphic: Introducing World.stamp as reference in multi-World setups
* Widgets: restore multi-dialog restrictions for multi-world setups
* Translation update for "hide primitives" feature

130426
------
* Morphic: ensure unique World stamps
* Blocks: symbols for paint editor

130427
------
* Blocks: paint bucket symbol
* highlight adjustments when merging scripts (#70)

130429
------
* Blocks: symbols for solid rectangles and circles

130430
------
* Objects: Costume shrink-wrapping
* Morphic: Allow triggers to be dragged if so specified (#83)
* GUI: select dragged costume
* Blocks: eraser symbol for paint editor
* Morphic: ScrollFrame scrollY() fix (fixes #24)

130506
------
* Reset Password feature (frontend only)

130510
------
* Reset Password via e-mailed link (frontend only)

130514
------
* paint.js: Paint editor, first version, contributed by Kartik Chandra, Yay!!
* Threads, Objects, Blocks: Broadcast & message enhancements: When I receive <any msg>, and getLastMessage reporter + watcher 

130515
------
* Objects: Costume shrinkWrap adjustments
* Morphic: Flat design preference introduced (default is off)
* Widgets: preparing for "flat GUI skins"

130516
------
* "flat" GUI design preference (in the settings menu)

130517
------
* GUI: user preferences (settings) are now made persistent in localStorage

130604
------
* Morphic: Prevent undesired native dragstart events (introduced in Chrome 27)

130605
------
* Objects: fix for hiding 'getLastAnswer' and 'getTimer' primitives 

130606
------
* BYOB: Newly created custom reporters now have an initial default REPORT block as definition body

* Morphic: focus World canvas on mouse down (otherwise prevent default)

130618
------
* Code mapping (generating textual code from blocks), first iteration

130619
------
* Store: persisting code mappings in project and block library files

130620
------
* GUI: add code mapping preference to persistent settings
* Blocks, BYOB, Lists, Objects: "flat" design enhancements for blocks and watchers
* Blocks: Multi-line input slots (TextSlotMorphs - %mlt)
* Objects: doMapCode() primitive now uses a multi-line input slot

130621
------
* Morphic, Blocks: "flat" design fix: Handle manually "unshadowed" StringMorphs
* Objects, Blocks: %code input slot - multi-line, monospaced, type-in slot for code mappings

130624
------
* Objects, Blocks: pretty printing for mapped code, now supporting Python mappings

130625
------
* Widgets, Blocks: code mapping dialog input is now multi-line monospaced

130626
------
* GUI: fixed #100 saving costumes to the cloud

130627
------
* Objects: fixed speech bubble scaling when sprite is not onstage (reported in the forums)

130628
------
* Morphic, GUI: improved importing costumes by dragging in pictures from other web pages

130702
------
* Objects: took out "security margin" in Costume's shrinkWrap() method b/c Chrome no longer needs it -> fixed empty costume bug when drawing over the paint editor's bounds
* GUI: Import libraries feature (in the project menu)

130704
------
* Codification (text code mapping and block header support)

130705
------
* Blocks: fixed CommentMorph hiding/showing bug when switching to / from presentation mode

130708
------
* Store: fixed serialization placement-bug for sprites

130709
------
* Objects, Blocks, Threads: Collapsed codification primitives (code, header) into a single block
* Blocks: Added isEmptySlot() to BooleanArgMorph (thanks, Brian, for the bug report!)

130710
------
* GUI: Reset hidden primitives and code mappings upon loading a new project

130711
------
* Blocks: fixed occasional flickering in scripting areas (caused by deleted feedback morphs, a bug that surfaced in Chrome 28 on OSX and may be due to a possible Chrome GC issue)
* Blocks: preserve nested blocks in the scripting area when replacing a variadic input list with another input ("kick out" the nested blocks instead of "swallowing" them)
* Blocks, Threads: new floor() function in monadic math reporter's drop-down

130712
------
* Blocks: Pipette symbol
* Paint: Pipette tool

130713
------
* Paint: fixed pipette tool for floodfill

130715
------
* Objects: increased palette's vertical growth by scrollBarSize
* Objects, Blocks, Threads: experimental text-function primitive (hidden, shown only in dev mode)

130724
------
* Dutch translation, yay!! Thanks, Frank Sierens

130730
------
* Blocks: Made it harder to drop reporters on the variadic input per se (as opposed to into one of its slots) in (default) "prefer empty slot drops" setting
* Blocks, Threads, Objects: PAUSE primitive command block
* GUI: fixed #104 (storing a cloud project under another name causes media loss)

130731
------
* Blocks, Threads, Objects: experimental text SPLIT primitive in the operators category

130801
------
* Blocks, Threads: "whitespace" & other options in SPLIT reporter's dropdown
* Blocks: Italicize editable input options (e.g. for the SPLT block) 
* Blocks: Undrop Reporters feature (in script areas' context menus)

130802
------
* Blocks: Undrop Reporters feature tweaks
* Blocks: Undrop Comments feature
* Blocks: Undrop Commands feature
* German translation update (for Undrop feature)

130805
------
* Polish translation, yay!! Thanks, Witek Kranas!
* Morphic: mouseEnterDragging fix

130807
------
* Objects, GUI: Sprite Nesting preliminaries
* Objects: Fixed stage costume scaling & misplacing bug. Thanks, Josh, for the report!
* Objects, GUI: Sprite Nesting GUI
* Objects: Nested Sprite Motion

130808
------
* Objects: Nested Sprite Scaling
* Objects: Nested Sprite Rotation
* Objects: Nested Sprite synchronous / independent rotation
* Dutch translation update, thanks, Sjoerd Dirk Meijer!

130809
------
* GUI: Nested Sprite Rotation style buttons on corral icons
* Store, Objects: Nested Sprite saving / loading

130810
------
* Objects, GUI: Nestable Sprites fixes
* German translation update

130812
------
* Objects, Threads: Nestable Sprites Collision Detection & fixes
* Dutch translation update

130814
------
* Traditional Chinese translation, yay!! thanks, Chu-Ching-Huang!

130817
------
* Norwegian translation, yay!! thanks, Olav Marschall!
* "Dynamic" library list, thanks, Brian

130916
------
* new Danish translation, yay!! thanks, Morten and Hanne!
* new Greek translation, yay!! thanks, Ino!
* Portuguese translation update, thanks, Manuel!
* French translation update,
* Norwegian translation update
* threads: minor custom block evaluation scope fix
* paint: flood fill freeze fix, thanks for the contribution, Kartik!
* objects: new SPLIT primitive reporter
* German translation update for new SPLIT primitive and delimiter options
* GUI: getPublicProject adjustments (lowercase username)
* GUI: prompt() - invocation fixes (null-choices)
* GUI: synchronous URL fetching simplifications for libraries and example projects
* GUI: fixed #115 - prevent loading several instances of the same block definition

130917
------
* Cloud: encodeDict() fix and new parseDict() method - used for accessing shared projects
* GUI: fixed #119, #149 (accessing a shared projects requires lowercasing the username)
* Portuguese translation update for SPLIT block, thanks, Manuel!
* Store, Objects: prevent costumes from being drawn while they are loading, fixes parts of #154

130918
------
* Objects, GUI: prevent costumes with CORS-tainted canvases, expected to fix #155, #154, #151, #148, #147, #127 for future projects
* BYOB: Prevent local custom blocks in global custom block definitions, fixes #167 for future projects

130919
* Objects: fixed #169 (sprites are sometimes off-placed when the project is loaded)
* Objects, GUI: fixed #146 (filter out empty costumes)

130920
------
* Morphic: fixed #172, Rectangle.amountToTranslateWithin() for IF ON EDGE, BOUNCE

130930
------
* Blocks: fixed #186 (can't duplicate blocks with anchored comments)

131001
------
* Objects: smooth numerical values displayed in watchers

131004
------
* Threads: Type-check the SPLIT block's input before eval'ing it
* Objects: Prevent watcher cells from growing wider as their contents becomes taller
* Objects: Keep watchers onstage when hiding/showing them, fixes #195
* BYOB, GUI, locale: New preference setting for plain block prototype labels

131008
------
* Lists: fixed type-issue for linked list indices (thanks, Nate, for reporting it!)
* Threads, Objects: experimental MAP primitive reporter in lists category, visible in dev mode
* Blocks: fixed #199 (can't delete reporter with attached comment via context menu)

131009
------
* Theads: added a variant for linked lists to the experimental MAP primitive reporter

131010
------
* Cloud: added "sanity check" to cloud-saving mechanism that errors if the serialized project data is corrupt and cannot be parsed as XML, addresses #203, #200, #171

131014
------
* Morphic: Condense damage list by merging overlapping dirty rectangles, thanks, Craxic!
* Objects: Increase maximum clone count from 128 to 300
* Portuguese translation update, thanks, Manuel!!

131015
------
* Morphic: further condense damage list by merging nearby rectangles, thanks, Craxic!

131017
------
* Threads: fixed #213 - Empty else block breaks return to caller

131025
------
* Blocks: enable Costumes as Symbols and Symbols as custom block label parts
* BYOB: Symbol selection menu for BlockLabelFragmentMorphs
* Portuguese translation update
* Widgets: enable Symbols in InputField drop down menus
* BYOB: enable Symbols in InputSlotDialog Morph’s drop down menu

131104
------
* GUI: filter quotation marks from project names (for backend index)
* BYOB: only show symbol menu for label fragments
* BYOB: customizable drop-down menus for input slots (experimental, commented out)

131107
------
* GUI, Cloud: transmission integrity check

131112
------
* Blocks, BYOB, Store: customizable drop-down menus for input slots
* Objects: fixed wrong NaN display for variable watchers
* Blocks: left-align multi-line text in value-bubbles
* Portuguese translation update, thanks, Manuel!

131115
------
* Blocks, BYOB, Store: „read-only“ option for editable custom block input slots
* BYOB, Blocks: custom block input slots reverting to default now show their default value
* Blocks: fixed read-only input slot coloring glitch, thanks Bernat, for reporting it!
* Objects: fixed #231 (watcher-display of Booleans)

131122
------
* Morphic: Don’t trigger events for eclipsed morphs (whose parent-chain contains a hidden morph)
* Blocks: Prevent „hide“ menu option for non-palette template blocks
* new Catalan translation! Yay, thanks, Bernat Romagosa Carrasquer!!

131126
------
* Cloud: fixed #125 (encode email address when signing up), thanks, Nathan!
* Threads: fixed #207 (stricter comparison of strings vs. numbers). Some edge cases remain, such as empty string equals zero and disregarding trailing / leading blanks. These are intentional. Please don’t nitpick and spare me the fundamentalism :-)
* Threads: fixed #245 (consistently auto-convert empty strings to zeroes)
* Localization and Portuguese translation updates, thanks, Manuel!
* Catalan translation update, thanks, Bernat!!
* Threads: Text comparisons are now case-sensitive („fixes“ #175)
* Threads: fixed #179 - don’t identify primitive (static) C-Slots as implicit formal parameters
* Threads: fixed #249 - preserve variable value types with edge cases (empty string, Boolean false)
* Threads: fixed #133 - preserve edge-cased argument types (empty string, Boolean false)
* Fixed issue #244 (relabelling now preserves empty input slots), thanks, Nathan!

131204
------
* Threads: handle text comparisons case-insensitive (again)
* Lists: harmonize equality testing and List CONTAINS testing
* French translation update, thanks, Martin!
* Threads: fixed #261 (less tolerant null-value-to-number-coercion)

131205
------
* Threads: fixed literal-to-non-literal zero-value comparison bug
* Objects: fixed #264 (mapped <ctrl-enter> to green-flag instead of <enter>)

131211
------
* Threads: accept lists as inputs to the green (text) LENGTH OF reporter

131212
------
* Objects, Morphic: fixed #277, #279 (blitting null-canvasses fails)

131219
------
* Objects: stage watchers for „mouse x“ and „mouse y“ sensing reporters. Thanks, Michael!
* Store: fixed saving/loading/localisation of new mouse coordinate stage watchers

140108
------
* Threads, Blocks, Objects: The FOR reporter’s first input now also accepts blocks and scripts („rings“), and reports a copy that is bound to the sprite indicated by the second input. This lets you „zombify“ (or remote-control) sprites (and create custom TELL and ASK blocks)
* Blocks: initial support for „sensing“ sprite-only custom block definitions, commented out for now
* Paint: Add mouseLeaveDragging() event behavior, thanks, Kartik, for this fix!
* Objects: Only shrink-wrap sprite costumes, thanks, Kartik, for this fix!
* Threads: Added xhr-headers to HTTP block, thanks, Tim!
* Threads, Blocks, Objects: Added StopOthers primitive, thanks, Kartik!
* Added „all but this option“ to StopOthers primitive, fixed the implementation
* Updated German translation with new strings

140109
------
* Objects: Mechanism for migrating blocks in existing projects to newer versions
* Blocks, Objects, Threads: Collapse old STOP primitives into a single one with a dropdown of options
* German translation update for new (migrated) STOP block
* Morphic: Fixed updateReferences() (how could nobody notice so long?!)
* XML: resolved unexpected assignment expressions (conform to the latest JSLint quibbles)
* validated all source files against the latest JSLint version

140110
------
* Threads: Revert pull request #295 (xhr-headers), breaks existing installations
* BYOB: Fixed #292 (pulldowns loose lines when exported as library)
* BYOB: Fixed #291 (readonly custom menus become non-readonly when block is edited)

140203
------
* Threads: Fixed #313. “Block of sprite” now works for interpolated (“timed”) blocks and for reporters (i.e. SAY FOR, THINK FOR, GLIDE, ASK etc.)
* Morphic: replace deprecated DOM “body” references with “documentElement”

140204
------
* GUI: Import costumes and backgrounds from the project menu, thanks, Brian, for the changeset!
* GUI: Import sounds from the project menu, thanks, Brian, for the changeset!
* Objects, Store, GUI: Flat line end option in the settings menu, saved with the project
* German translation update
* Objects: Enable playing sounds and notes on Firefox, thanks, Dean Brettle, for this fix!!
* Update Portuguese translation, thanks, Manuel!
* Update French translation, thanks, grego!

140205
------
* Objects, Paint: One-stop-shopping for stage dimensions (changing the stage dimensions in line 3720 of objects.js takes care of everything)

140211
------
* GUI: Set stage dimensions arbitrarily (new entries in the settings menu when holding shift)
* Store: Saving & Loading for arbitrary stage dimensions in the project data
* new Date block, thanks, Michael!!!

140213
------
* GUI, Store: constrain minimum stage size to 480 x 180
* GUI: Fixed #322, #324
* Widgets: new “promptVector” dialog box feature
* GUI: Use new vector prompter for stage dimensions
* German translation update

140331
------
* Objects: experimental “wardrobe” and “jukebox” reporters in dev mode
* Blocks, Objects: display costume thumbnails in speech/thought/value bubbles and watcher cells
* Objects: let “switch to costume” block accept actual costume objects (in addition to names and numbers)

140430
------
* new Finnish translation, yay! Thanks, Jouni!
* new Brazilian Portuguese translation, yay! Thanks, Aldo!
* Russian translation update
* Portuguese translation update
* additional localisations, thanks, Manuel!
* text-encoding fix for exporting variable contents, thanks, Blob!
* set turbo mode block fix, thanks, Michael and Nathan!
* enable storage and retrieval of first-class costumes in both file formats

140502
------
* error message when trying to import a non-text file into a variable, thanks, Nate!
* fixed #407 (custom-block coloring w/ zebra off)

140520
------
* Morphic: Prevent default action for ctrl-/cmd-key event
* Snap.html: Focus the world canvas on startup, so Snap reacts to keyboard events right away
* Threads: new Variable data structure, for refactoring upvar references, not yet used anywhere
* Objects, GUI: Search Blocks, feature. Thanks, Kyle, for architecting and designing this!!!
* Objects, GUI: Keyboard-shortcuts for opening (cmd-o), saving (cmd-s) projects and for finding blocks (cmd-f)

140526
------
* Objects: Fixed #445 (minor search + zoom issues)
* Localization additions and Portuguese translation update, thanks, Manuel!
* GUI, cloud: Show last-changed-timestamp when opening cloud projects

140604
------
* Blocks: refactor “script pics” feature
* BYOB: new scriptsPicture() method for custom block definitions
* GUI: new (hidden) feature: “Export all scripts as pic” (including custom block refs)
* Graphic effects!!! Yay, thanks, Yuan!
* Bug fixes from Nathan, yay, thanks, Nathan!!
* German translation update
* Paint Editor transforms, yay, thanks, Kartik!!

140605
------
* Objects: stop replacing the empty string with the number zero in watchers
* Threads: initialize new variables with zero (instead of null)
* Objects: fixed #465
* Objects: fixed #457

140605
------
* Objects: gracefully hide & show the stage, fixed #281
* Objects: add hide and show blocks to the stage’s “looks” category
* Objects: added more relabelling options to SAY and THINK variants
* Blocks, objects: enable relabelling blocks with C-Slots
* Blocks: enable relabelling blocks across categories
* Objects: more relabelling options for SAY, THINK, ASK
* BYOB, Blocks: relabelling custom blocks (experimental)

140623
------
* Morphic: Inspector enhancements (dynamic property update, keyboard shortcuts)
* GUI: update visibility of share/unshare buttons, Thanks, Kunal!

140706
------
* Blocks: add “ringify” to every context menu that already has “unringify”

140708
------
* Threads: show error messages for custom blocks (propagating to the script’s top block)
* Threads: adjust to Doug Crockford’s latest infuriating nitpickings in JSLint
* GUI: show username in ‘logout’ entry of cloud menu
* GUI, Objects: fixed scrolling glitch in the palette, thanks, Kunal!
* GUI, Objects: add keyboard shortcut for “new project”: ctr-n
* revert changes made for JSLint’s sake after the issue was fixed in JSLint
* Blocks: change “delete” behavior in context menus to only delete this particular blocks (and reconnect the next block to the previous one)
* fixed #490

140711
------
* Morphic: keyboard shortcut ctrl/cmd-shift-a for ‘@‘
* Morphic: allow directly editing properties in inspector widgets
* Blocks: change the color of the %pause symbol to be more yellowish
* Threads: fixed #506, thanks @haritop, for both the report and for providing the fix!!
* GUI: fixed #412 (incomplete sprite-removal)
* GUI: fixed #507 (limit persistent block zoom to 12x), thanks Michael!
* Morphic, GUI, Objects: fixed #508 (don’t popup empty menus), thanks Michael!

140717
------
* new translation into Bangla (Bengali)!!! Yay, thanks, Mokter!!
* Lists: make internal list ops iterative (instead of recursive), thanks, Brian!
* Objects, Blocks: new feature (hidden in dev mode): Save screenshot, thanks, Viraj!
* GUI: Use new mechanism for unique costume names on imported costumes as well

140718
------
* Lists: incorporate Brian’s adhoc fixes, thanks, Brian!
* GUI: Use new mechanism for unique costume names on the paint editor, renamed costumes and costumes dragged and dropped onto sprite icons
* add “letter” option to the split block’s list of delimiters, Thanks, Michael!
* update German translation

140721
------
* fixed #518

140722
------
* Objects, Threads: fixed #521 (deleting variable watchers by dropping them on the palette results in wrong ones to be created when showing them again)

140723
------
* Objects: Scale down oversized images to current stage dimensions. Thanks, Dan, for reporting this!

140724
------
* Objects: fixed “lost sprites bug” - ensure duplicated sprites keep wearing their current costume through save and re-load
* GUI, Objects: improve unique sprite- and costume names
* Threads: Display “empty” Contexts (e.g. continuations) as empty rings

140725
------
* Objects, Threads: new “JavaScript function” primitive. Go figure…
* GUI: updated Credits

140728
------
* Lists: fixed "Load Failed Type Error Cannot read property 'isLinked' of null"
* Threads: enable “JS function” block to create custom control structures and HOFs

140729
------
* fixed #526, thanks, Bernat, for reporting it!
* Objects, GUI: duplicate and clone nested sprites
* GUI, Store: export and import nested sprites
* Objects: double clicking on a sprite in the stage selects it in the IDE
* Objects: added ‘move’ option to the sprite context menu, lets the user move (nested) sprites in edit mode without changing their layering, and also sprites marked “undraggable” 
* updated Portuguese translation, thanks, Manuel!
* updated German translation
* Morphic: fixed #497 (prevent bubble shadows from getting cut-off)
* Blocks: keep result-bubbles within the enclosing scripting pane

140730
------
* Objects: propagate HIDE and SHOW to nested sprite parts
* GUI: propagate DELETE to nested sprite parts
* Blocks, Threads: export script pic with result bubble (shift-context-menu of reporter scripts)
* updated Portuguese translation, thanks, Manuel!

140813
------
* Threads, Blocks: enable Zombiefication of JS-Functions
* Morphic: Fix #563 (Paste into Chrome), thanks, @Muon, for the hint!

140917
------
* Threads, Objects, Store: Refactor variables handling, introducing Variable objects, all functionality stays the same

140918
------
* Threads: fixed #174, replace UpvarReferences with references to Variable objects, fixes upvar scope issues

140922
------
* Blocks: Make upvars mutable
* GUI: fixed #585 (sprite name conflict with stage). Thanks, Michael, for the report!

140929
------
* Threads: fixed #591 fully copy local variables for sprite duplicates and (Scratch-like) clones
* Portuguese translation update, thanks, Manuel!
* fixed #590 (Russian translation syntax glitches) Thanks @alexf2000 !
* Paint: flood fill issue fixed, thanks, Kartik!

140930
------
* Objects: fixed #593 match broadcast numbers with event hat blocks containing strings that can be parsed as numbers 
* BYOB: allow percent symbols in custom block texts (fix #361), thanks, @Gubolin!!
* Morphic: allow negative min/max values for sliders (fix #285), thanks, @Gubolin!!
* Objects: fixed #378 (disable context menus for boolean representations)
* Blocks: fixed #584

141001
------
* Threads: workaround for some REPORT issues
* Objects: fixed #599 (disable IDE keyboard shortcuts in presentation mode)
* Blocks: correctly display symbol for %obj type input slots in the prototype template
* Portuguese translation update, thanks, Manuel!

141002
------
* GUI: New feature - minimal stage mode (shift-click on small-stage button)

141006
------
* GUI, Objects: fixed #604. Thanks, @Gubolin!

141008
------
* Objects: fixed #608, #610

141106
------
* Morphic: Enable mouseMove events with right button pressed

141114
------
* Threads, Store: Fix reporting out of nested custom C-shaped blocks

141117
------
* Threads, Blocks: Treat REPORT blocks inside custom command definitions as STOP THIS BLOCK / IGNORE INPUTS

141120
------
* Lists: Fixed #642 avoid “freezing” when calling CONS on non-list/null
* Threads: Fixed #364 avoid “freezing” when calling LAUNCH on empty ring
* Threads: Added optional “onComplete” callback to Process, thanks, @bromagosa!
* GUI: Set Default Save location to Cloud on load, thanks, @cycomachead!
* GUI: Updated the “About” Dialog with a mention of support from CDG (SAP Labs)
* BYOB: Percent sign fix for block labels, thanks, @natashasandy!
* Threads: fix ‘line’ option in ‘split’ block for Windows files, thanks, @brianharvey!
* Morphic: fix slider range 1, thanks, @tonychenr !
* translation update, thanks, Manuel!

141121
------
* Threads, Blocks: Fix STOP THIS BLOCK’s lexical awareness

1411213
-------
* Threads: Fix “stop this block” primitive for tail-call-elimination

1411224
-------
* Threads: Fixed #318
* Objects: Fixed #416
* Objects: Fixed #372
* Threads: Fixed #644
* Store: Fixed #34
* Threads: Fixed #131
* snap.html, favicon.ico: new Favicon, thanks, Michael!
* Threads: improved whitespace detection for “split” primitive, thanks, Michael!
* Threads: tail-call-elimination for reporters experiment (commented out, under construction)

1411225
-------
* Threads: Evaluator optimizations (reducing the stack size for reporters)
* Threads: Full TCO (tail-call-elimination), now Snap! *is* Scheme :-)

1411225
-------
* Threads: Fixed #656

141201
------
* Objects: Hide hidden elements in the project thumbnail
* GUI: Point project dialog to cloud if already signed in, thanks, Michael!
* favicon: Transparent background, thanks, Michael!

141202
------
* New Kannada translation. Yay!! Thanks, Vinayakumar R!!

141203
------
* Morphic: Cache actual bounding box of the Pen arrow shape
* Threads, Objects: Improve edge-collision detection of default sprite “arrow” shape

141204
------
* Threads, Objects: Experimental “ForEach” primitive (hidden in dev mode)
* GUI: Another attempt at pointing the project dialog to the cloud if signed in

141205
------
* Morphic: Avoid auto-scaling artefacts in Safari on retina displays (resulting in “traces” when dragging items)

141206
------
* Store: Fixed #668

141211
------
* Threads: yield after each cycle in the experimental “forEach” primitive

141215
------
* New Swedish translation! Yay!! Thanks, Erik A Olsson!

141217
------
* Objects, Store: Experimental “processes” count watcher (hidden in dev mode)
* Threads: Remove terminated processes from expired clones
* Threads: Let “zombifying” scripts access receivers’ local vars

150112
------
* Cloud, GUI: Backend load balancing support, eliminate now obsolete authentication roundtrip, Cloud error message tweaks
* Store: notify users of potential incompatibilities when opening projects created in other forks (e.g. BeetleBlocks)
* Threads: Don’t highlight scripts running inside clones (boosts performance), Thanks, @aranlunzer, for the hint!
* Objects: Disable clones from being edited via their context menus or double-click
* Italian translation update, thanks, Alberto Firpo!
* GUI: add additional yields to nextSteps() (work around a bug in Chrome)

150113
------
* BYOB: fixed #702
* GUI: fixed #680

150121
------
* Objects: Keep layering of nested sprites thru drag & drop
* GUI, Store, BYOB: Generate ScriptsPaneTexture programmatically
* GUI: Fix Zoom Dialog’s sample background in “flat” design
* Updated Korean and Catalan translations, thanks, Yunjae Jang and Bernat Romagosa!
* Objects: Fix speech bubbles of dragged nested sprites

150128
------
* Objects: Fixed #710

150206
------
* GUI: Added url switch #cloud: to open a shared project in edit mode

150220
------
* Malayam, Tamil and Telagu translations, thanks, Vinay Kumar!!
* Un-hide “Save to disk” feature (currently supported by both Chrome and Firefox, but not by Safari)
* Update German translation
* GUI: Make “project data in URLs” a hidden dev option (prevent long urls per default)

150223
------
* Blocks, Objects: Add user-interaction choices to the “When I am ...” hat block
* Update German translation
* Store: Avoid incompatibility warning for very old (pre-earmarked) projects

150224
------
* Store: fixed #725

150228
------
* Blocks, Store, GUI: Cache inputs, accelerates evaluating recursive reporters and warped / turbo recursive commands by up to 40%
* Objects: slightly optimize warped / turbo execution
* Threads: fixed #715
* BYOB: fixed #716

150302
------
* BYOB: fixed #730