Add node modules and new code for release (#168)

Co-authored-by: OliverMKing <OliverMKing@users.noreply.github.com>

node_modules/underscore/cjs/_createEscaper.js

@@ -0,0 +1,19 @@
+var keys = require('./keys.js');
+
+// Internal helper to generate functions for escaping and unescaping strings
+// to/from HTML interpolation.
+function createEscaper(map) {
+  var escaper = function(match) {
+    return map[match];
+  };
+  // Regexes for identifying a key that needs to be escaped.
+  var source = '(?:' + keys(map).join('|') + ')';
+  var testRegexp = RegExp(source);
+  var replaceRegexp = RegExp(source, 'g');
+  return function(string) {
+    string = string == null ? '' : '' + string;
+    return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
+  };
+}
+
+module.exports = createEscaper;