Bump to v4.10.0.

_reHasComplexSymbol.js

@@ -0,0 +1,16 @@
+define([], function() {
+
+  /** Used to compose unicode character classes. */
+  var rsAstralRange = '\\ud800-\\udfff',
+      rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+      rsComboSymbolsRange = '\\u20d0-\\u20f0',
+      rsVarRange = '\\ufe0e\\ufe0f';
+
+  /** Used to compose unicode capture groups. */
+  var rsZWJ = '\\u200d';
+
+  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
+  var reHasComplexSymbol = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
+
+  return reHasComplexSymbol;
+});