Add support for macro modules

Now JavaScript macros can be defined in "macro" modules

core/modules/macros/makedatauri.js

@@ -0,0 +1,44 @@
+/*\
+title: $:/core/modules/macros/makedatauri.js
+type: application/javascript
+module-type: macro
+
+Macro to convert the content of a tiddler to a data URI
+
+<<makedatauri text:"Text to be converted" type:"text/vnd.tiddlywiki">>
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Information about this macro
+*/
+
+exports.name = "makedatauri";
+
+exports.params = [
+	{name: "text"},
+	{name: "type"}
+];
+
+/*
+Run the macro
+*/
+exports.run = function(text,type) {
+	type = type || "text/vnd.tiddlywiki";
+	var typeInfo = $tw.config.contentTypeInfo[type] || $tw.config.contentTypeInfo["text/plain"],
+		isBase64 = typeInfo.encoding === "base64",
+		parts = [];
+	parts.push("data:");
+	parts.push(type);
+	parts.push(isBase64 ? ";base64" : "");
+	parts.push(",");
+	parts.push(isBase64 ? text : encodeURIComponent(text));
+	return parts.join("");
+};
+
+})();

core/modules/macros/version.js

@@ -0,0 +1,30 @@
+/*\
+title: $:/core/modules/macros/version.js
+type: application/javascript
+module-type: macro
+
+Macro to return the TiddlyWiki core version number
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+/*
+Information about this macro
+*/
+
+exports.name = "version";
+
+exports.params = [];
+
+/*
+Run the macro
+*/
+exports.run = function() {
+	return $tw.version;
+};
+
+})();