…kering spellcheck, autocorrect, text shortcuts, etc.)

move some checks into previous if statement, remove commented out code

move native behavior into `slate-react`, and remove any external interface

dont use native editing if marks are set, as a new node will be inserted

match -> above

remove nativeOperationsQueue from editor

bail out of native queueing and immediately flush events if non insert_text operation is being applied.

…r or space, to limit potential bad side effects.