83: Add support for & operator for unescaping

Conflicts:

	mustache.js

mustache.js

@@ -244,7 +244,7 @@ var Mustache = function () {
 
       var new_regex = function () {
         return that.getCachedRegex("render_tags", function (otag, ctag) {
-          return new RegExp(otag + "(=|!|>|\\{|%)?([^#\\^]+?)\\1?" + ctag + "+", "g");
+          return new RegExp(otag + "(=|!|>|&|\\{|%)?([^#\\^]+?)\\1?" + ctag + "+", "g");
         });
       };
 
@@ -260,6 +260,7 @@ var Mustache = function () {
         case ">": // render partial
           return that.render_partial(name, context, partials);
         case "{": // the triple mustache is unescaped
+        case "&": // & operator is an alternative unescape method
           return that.find(name, context);
         default: // escape the value
           return escapeHTML(that.find(name, context));