Add missing changelog for 1.2

Author: Alexander Guz

CHANGELOG

@@ -1,8 +1,15 @@
-* 1.1.1 (2016-12-12)
+* 1.2.1 (2016-12-12)
 
  * Remove content injection from $_GET.
  * Add PHP 5.6, 7.0, 7.1 to Travis file.
 
+* 1.2 (2016-06-11)
+
+ * Added "ESCAPE_BY_DEFAULT" setting for context-aware auto-escaping.
+ * Made "Context" work with plain objects.
+ * "escape" now uses "htmlentities".
+ * Fixed "escape_now".
+
 * 1.1 (2015-06-01)
 
  * New tags: "paginate", "unless", "ifchanged" were added