1 files changed, 2 insertions, 1 deletions
diff --git a/byob.js b/byob.js
index d8c0813..8954c6a 100644
--- a/byob.js
+++ b/byob.js
@@ -105,7 +105,7 @@ CommentMorph, localize, CSlotMorph, SpeechBubbleMorph, MorphicPreferences*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.byob = '2013-June-18';
+modules.byob = '2013-July-04';
 
 // Declarations
 
@@ -139,6 +139,7 @@ function CustomBlockDefinition(spec, receiver) {
     this.declarations = {}; // {'inputName' : [type, default]}
     this.comment = null;
     this.codeMapping = null; // experimental, generate text code
+    this.codeHeader = null; // experimental, generate text code
 
     // don't serialize (not needed for functionality):
     this.receiver = receiver || null; // for serialization only (pointer)