kangax/fabric.js — pull request #1111 by GordoRank (2014-01-20 08:14:53+00:00)
Title: Prevent multiple hidden Textareas

Currently a hidden ```TEXTAREA``` is created for every IText instance and remain in the DOM forever.

This patch creates the required textarea on demand in ```enterEditing``` and destroys it in ```exitEditing```

This prevents multiple Textareas from hanging around in the DOM which can cause slowdowns in complex scenes with lots of IText instances.