Fixed CodeMirror change event not propagating to original edit field.

I've come across this bug myself while using CKEditor with this plugin in an angularjs environment where I update the model on change events. I found issue #66, but the fix does not seem to work at all. The non-inline change event was missed in the fix. And when inline, it gave me a js error, because editor.editable() is undefined. I've had some reliable results with doing `editor.fire('change', this)` like it was also done with the blur event. I've also removed the unnecessary delay that will lead to more potential bugs in code relying on this event (like mine).