emit_FAST(), emit_first_FAST(); update comment parsing
Make macros out of the failing/unsafe contexts.
Finish new emit_first() and emit_first_kwargs()
Finish emit()'s kwargs version.
emit_FAST() -> emit(); emit() -> emit_kwargs()
Combine emit()/emit_first() internally.
Begin porting C tokenizer to Python 3.
Make load_entitydefs() work on Python 3.
Fix py3k module importing; stick a bunch of macros in one place.
wiki_markup attr should be unicode, not bytes
A few tweaks; py3k support now complete.
More unification.
Merge branch 'feature/c_improvements' into develop (closes #18)
Add py3k tokenizer to changelog.