Expelled remnants of state machine. Implemented small lookahead.

Also we're back to brancy development.
Implemented nested comments
Corner tests for nested comments
Implemented unbalances.

TODO check the excess closing comment eating.
Renamed error types
Removed warnings.
Parentheses tests
Parentheses implementation
Quotes tests
Quotes implementation
Merging 'atmospehere'
Mergeed quotes and parentheses branch