Fixed bug where the undo/redo button states didn't change if you removed all undo levels using undoManager.clear.
Fixed bug where unencoded links inside query strings or hash values would get processed by the relative urls logic.
Fixed paste performance issue due to complex regexp.
Added new getTextInlineElements method to Schema.js
Added new paste_merge_formats option that reduces the number of nested text format elements produced on paste. Enabled by default.