Changes with Aloha.Editor 1.3.32

Bugfix SUP-2992

When the checkHeadingHierarchy feature of the format plugin was activated the plugin would try to access a null object when an editable contained blocks. This has been fixed.

Bugfix SUP-3154

The formatless paste contenthandler (used by the formatless paste plugin) and the generic contenthandler
did not clean any content, when an aloha block was found in the pasted contents.
This has been changed, so that the content handlers will clean everything else, but will still leave the
aloha blocks (identified by the class aloha-block) untouched.

Bugfix SUP-3192

The KeyEvent.keyIdentifier field is said to be removed in Chrome. This fix removes it‘s occurrence in AlohaEditor.