FUEL: Error message is now shown if word can't be found.
FUEL: Put several more characters that can be used in word names in the symbols class
FUEL: Correct regexp to work with multiline USING:
FUEL: Make fuel-help (C-c C-d d) work for vocabularies too.
FUEL: Tables in help buffers must be plain ascii to be correctly rendered everywhere.
FUEL: Improve font-lock regexps related to alien syntax.
FUEL: Font-locking in the listener (WIP).
improve font-locking in listener
Merge branch 'fuel-listener-colors' of https://github.com/bjourne/factor into fuel-listener-colors