Updated changelog and gulped

Author: Dervisevic

CHANGELOG

@@ -1,3 +1,13 @@
+v0.7.8
+------
+* Thanks to @burdiuz for finding a memory leak issue and finding a solution. And thanks to @davidlgj for implementing that solution.
+* Post render event, thanks @mrijken
+* Events documentation, thanks @Dervisevic
+* startEmpty documentation, thanks @davidlj
+* npm and bower updates, thanks @Dervisevic
+* x-schema-form attribute, thanks @davidlgj
+* htmlClass and fieldHtmlClass form options, thanks @davidlgj
+
 v0.7.7
 ------
  * Array ref changes in model updates form, thanks @Sandreu