diff --git a/appengine/app.yaml b/appengine/app.yaml
index 887349dc1..d5d1bb0a0 100644
--- a/appengine/app.yaml
+++ b/appengine/app.yaml
@@ -1,5 +1,5 @@
 application: blockly-demo
-version: 20190722
+version: 20191014
 runtime: python27
 api_version: 1
 threadsafe: no
diff --git a/javascript_compressed.js b/javascript_compressed.js
index 98df22838..682ce285b 100644
--- a/javascript_compressed.js
+++ b/javascript_compressed.js
@@ -12,8 +12,8 @@ Blockly.JavaScript.init=function(a){Blockly.JavaScript.definitions_=Object.creat
 a=Blockly.Variables.allUsedVarModels(a);for(d=0;d<a.length;d++)b.push(Blockly.JavaScript.variableDB_.getName(a[d].getId(),Blockly.Variables.NAME_TYPE));b.length&&(Blockly.JavaScript.definitions_.variables="var "+b.join(", ")+";")};
 Blockly.JavaScript.finish=function(a){var b=[],c;for(c in Blockly.JavaScript.definitions_)b.push(Blockly.JavaScript.definitions_[c]);delete Blockly.JavaScript.definitions_;delete Blockly.JavaScript.functionNames_;Blockly.JavaScript.variableDB_.reset();return b.join("\n\n")+"\n\n\n"+a};Blockly.JavaScript.scrubNakedValue=function(a){return a+";\n"};Blockly.JavaScript.quote_=function(a){a=a.replace(/\\/g,"\\\\").replace(/\n/g,"\\\n").replace(/'/g,"\\'");return"'"+a+"'"};
 Blockly.JavaScript.multiline_quote_=function(a){return a.split(/\n/g).map(Blockly.JavaScript.quote_).join(" + '\\n' +\n")};
-Blockly.JavaScript.scrub_=function(a,b,c){var d="";if(!a.outputConnection||!a.outputConnection.targetConnection){var e=a.getCommentText();e&&(e=Blockly.utils.string.wrap(e,Blockly.JavaScript.COMMENT_WRAP-3),d=a.getProcedureDef?d+("/**\n"+Blockly.JavaScript.prefixLines(e+"\n"," * ")+" */\n"):d+Blockly.JavaScript.prefixLines(e+"\n","// "));for(var f=0;f<a.inputList.length;f++)a.inputList[f].type==Blockly.INPUT_VALUE&&(e=a.inputList[f].connection.targetBlock())&&(e=Blockly.JavaScript.allNestedComments(e))&&
-(d+=Blockly.JavaScript.prefixLines(e,"// "))}a=a.nextConnection&&a.nextConnection.targetBlock();c=c?"":Blockly.JavaScript.blockToCode(a);return d+b+c};
+Blockly.JavaScript.scrub_=function(a,b,c){var d="";if(!a.outputConnection||!a.outputConnection.targetConnection){var e=a.getCommentText();e&&(e=Blockly.utils.string.wrap(e,Blockly.JavaScript.COMMENT_WRAP-3),d+=Blockly.JavaScript.prefixLines(e+"\n","// "));for(var f=0;f<a.inputList.length;f++)a.inputList[f].type==Blockly.INPUT_VALUE&&(e=a.inputList[f].connection.targetBlock())&&(e=Blockly.JavaScript.allNestedComments(e))&&(d+=Blockly.JavaScript.prefixLines(e,"// "))}a=a.nextConnection&&a.nextConnection.targetBlock();
+c=c?"":Blockly.JavaScript.blockToCode(a);return d+b+c};
 Blockly.JavaScript.getAdjusted=function(a,b,c,d,e){c=c||0;e=e||Blockly.JavaScript.ORDER_NONE;a.workspace.options.oneBasedIndex&&c--;var f=a.workspace.options.oneBasedIndex?"1":"0";a=0<c?Blockly.JavaScript.valueToCode(a,b,Blockly.JavaScript.ORDER_ADDITION)||f:0>c?Blockly.JavaScript.valueToCode(a,b,Blockly.JavaScript.ORDER_SUBTRACTION)||f:d?Blockly.JavaScript.valueToCode(a,b,Blockly.JavaScript.ORDER_UNARY_NEGATION)||f:Blockly.JavaScript.valueToCode(a,b,e)||f;if(Blockly.isNumber(a))a=Number(a)+c,d&&
 (a=-a);else{if(0<c){a=a+" + "+c;var g=Blockly.JavaScript.ORDER_ADDITION}else 0>c&&(a=a+" - "+-c,g=Blockly.JavaScript.ORDER_SUBTRACTION);d&&(a=c?"-("+a+")":"-"+a,g=Blockly.JavaScript.ORDER_UNARY_NEGATION);g=Math.floor(g);e=Math.floor(e);g&&e>=g&&(a="("+a+")")}return a};Blockly.JavaScript.colour={};Blockly.JavaScript.colour_picker=function(a){return[Blockly.JavaScript.quote_(a.getFieldValue("COLOUR")),Blockly.JavaScript.ORDER_ATOMIC]};Blockly.JavaScript.colour_random=function(a){return[Blockly.JavaScript.provideFunction_("colourRandom",["function "+Blockly.JavaScript.FUNCTION_NAME_PLACEHOLDER_+"() {","  var num = Math.floor(Math.random() * Math.pow(2, 24));","  return '#' + ('00000' + num.toString(16)).substr(-6);","}"])+"()",Blockly.JavaScript.ORDER_FUNCTION_CALL]};
 Blockly.JavaScript.colour_rgb=function(a){var b=Blockly.JavaScript.valueToCode(a,"RED",Blockly.JavaScript.ORDER_COMMA)||0,c=Blockly.JavaScript.valueToCode(a,"GREEN",Blockly.JavaScript.ORDER_COMMA)||0;a=Blockly.JavaScript.valueToCode(a,"BLUE",Blockly.JavaScript.ORDER_COMMA)||0;return[Blockly.JavaScript.provideFunction_("colourRgb",["function "+Blockly.JavaScript.FUNCTION_NAME_PLACEHOLDER_+"(r, g, b) {","  r = Math.max(Math.min(Number(r), 100), 0) * 2.55;","  g = Math.max(Math.min(Number(g), 100), 0) * 2.55;",
diff --git a/python_compressed.js b/python_compressed.js
index 80c5e3ea8..c59970012 100644
--- a/python_compressed.js
+++ b/python_compressed.js
@@ -10,8 +10,8 @@ Blockly.Python.init=function(a){Blockly.Python.PASS=this.INDENT+"pass\n";Blockly
 " = None");a=Blockly.Variables.allUsedVarModels(a);for(d=0;d<a.length;d++)b.push(Blockly.Python.variableDB_.getName(a[d].getId(),Blockly.Variables.NAME_TYPE)+" = None");Blockly.Python.definitions_.variables=b.join("\n")};
 Blockly.Python.finish=function(a){var b=[],c=[],d;for(d in Blockly.Python.definitions_){var e=Blockly.Python.definitions_[d];e.match(/^(from\s+\S+\s+)?import\s+\S+/)?b.push(e):c.push(e)}delete Blockly.Python.definitions_;delete Blockly.Python.functionNames_;Blockly.Python.variableDB_.reset();return(b.join("\n")+"\n\n"+c.join("\n\n")).replace(/\n\n+/g,"\n\n").replace(/\n*$/,"\n\n\n")+a};Blockly.Python.scrubNakedValue=function(a){return a+"\n"};
 Blockly.Python.quote_=function(a){a=a.replace(/\\/g,"\\\\").replace(/\n/g,"\\\n");var b="'";-1!==a.indexOf("'")&&(-1===a.indexOf('"')?b='"':a=a.replace(/'/g,"\\'"));return b+a+b};Blockly.Python.multiline_quote_=function(a){a=a.replace(/'''/g,"\\'\\'\\'");return"'''"+a+"'''"};
-Blockly.Python.scrub_=function(a,b,c){var d="";if(!a.outputConnection||!a.outputConnection.targetConnection){var e=a.getCommentText();e&&(e=Blockly.utils.string.wrap(e,Blockly.Python.COMMENT_WRAP-3),d=a.getProcedureDef?d+('"""'+e+'\n"""\n'):d+Blockly.Python.prefixLines(e+"\n","# "));for(var f=0;f<a.inputList.length;f++)a.inputList[f].type==Blockly.INPUT_VALUE&&(e=a.inputList[f].connection.targetBlock())&&(e=Blockly.Python.allNestedComments(e))&&(d+=Blockly.Python.prefixLines(e,"# "))}a=a.nextConnection&&
-a.nextConnection.targetBlock();c=c?"":Blockly.Python.blockToCode(a);return d+b+c};Blockly.Python.getAdjustedInt=function(a,b,c,d){c=c||0;a.workspace.options.oneBasedIndex&&c--;var e=a.workspace.options.oneBasedIndex?"1":"0";a=Blockly.Python.valueToCode(a,b,c?Blockly.Python.ORDER_ADDITIVE:Blockly.Python.ORDER_NONE)||e;Blockly.isNumber(a)?(a=parseInt(a,10)+c,d&&(a=-a)):(a=0<c?"int("+a+" + "+c+")":0>c?"int("+a+" - "+-c+")":"int("+a+")",d&&(a="-"+a));return a};Blockly.Python.colour={};Blockly.Python.colour_picker=function(a){return[Blockly.Python.quote_(a.getFieldValue("COLOUR")),Blockly.Python.ORDER_ATOMIC]};Blockly.Python.colour_random=function(a){Blockly.Python.definitions_.import_random="import random";return["'#%06x' % random.randint(0, 2**24 - 1)",Blockly.Python.ORDER_FUNCTION_CALL]};
+Blockly.Python.scrub_=function(a,b,c){var d="";if(!a.outputConnection||!a.outputConnection.targetConnection){var e=a.getCommentText();e&&(e=Blockly.utils.string.wrap(e,Blockly.Python.COMMENT_WRAP-3),d+=Blockly.Python.prefixLines(e+"\n","# "));for(var f=0;f<a.inputList.length;f++)a.inputList[f].type==Blockly.INPUT_VALUE&&(e=a.inputList[f].connection.targetBlock())&&(e=Blockly.Python.allNestedComments(e))&&(d+=Blockly.Python.prefixLines(e,"# "))}a=a.nextConnection&&a.nextConnection.targetBlock();c=
+c?"":Blockly.Python.blockToCode(a);return d+b+c};Blockly.Python.getAdjustedInt=function(a,b,c,d){c=c||0;a.workspace.options.oneBasedIndex&&c--;var e=a.workspace.options.oneBasedIndex?"1":"0";a=Blockly.Python.valueToCode(a,b,c?Blockly.Python.ORDER_ADDITIVE:Blockly.Python.ORDER_NONE)||e;Blockly.isNumber(a)?(a=parseInt(a,10)+c,d&&(a=-a)):(a=0<c?"int("+a+" + "+c+")":0>c?"int("+a+" - "+-c+")":"int("+a+")",d&&(a="-"+a));return a};Blockly.Python.colour={};Blockly.Python.colour_picker=function(a){return[Blockly.Python.quote_(a.getFieldValue("COLOUR")),Blockly.Python.ORDER_ATOMIC]};Blockly.Python.colour_random=function(a){Blockly.Python.definitions_.import_random="import random";return["'#%06x' % random.randint(0, 2**24 - 1)",Blockly.Python.ORDER_FUNCTION_CALL]};
 Blockly.Python.colour_rgb=function(a){var b=Blockly.Python.provideFunction_("colour_rgb",["def "+Blockly.Python.FUNCTION_NAME_PLACEHOLDER_+"(r, g, b):","  r = round(min(100, max(0, r)) * 2.55)","  g = round(min(100, max(0, g)) * 2.55)","  b = round(min(100, max(0, b)) * 2.55)","  return '#%02x%02x%02x' % (r, g, b)"]),c=Blockly.Python.valueToCode(a,"RED",Blockly.Python.ORDER_NONE)||0,d=Blockly.Python.valueToCode(a,"GREEN",Blockly.Python.ORDER_NONE)||0;a=Blockly.Python.valueToCode(a,"BLUE",Blockly.Python.ORDER_NONE)||
 0;return[b+"("+c+", "+d+", "+a+")",Blockly.Python.ORDER_FUNCTION_CALL]};
 Blockly.Python.colour_blend=function(a){var b=Blockly.Python.provideFunction_("colour_blend",["def "+Blockly.Python.FUNCTION_NAME_PLACEHOLDER_+"(colour1, colour2, ratio):","  r1, r2 = int(colour1[1:3], 16), int(colour2[1:3], 16)","  g1, g2 = int(colour1[3:5], 16), int(colour2[3:5], 16)","  b1, b2 = int(colour1[5:7], 16), int(colour2[5:7], 16)","  ratio = min(1, max(0, ratio))","  r = round(r1 * (1 - ratio) + r2 * ratio)","  g = round(g1 * (1 - ratio) + g2 * ratio)","  b = round(b1 * (1 - ratio) + b2 * ratio)",