Don't pass the raw expression to filters that's ridiculous.
Remove setup__str__ setting.
Remove outputMethosBeforeAttributes setting.
Remove defDocStrMsg setting.
Remove handlerForExtendsDirective setting.
Remove some __str__ methods.
Merge pull request #84 from bukzor/more_settings_gone

Remove more settings
Remove non-c version of NameMapper.
Remove useStackFrames option.