Fill color is still the same with 'color' (i.e. can be overridden by markup still), but now there's a stroke_width and a stroke_color option that, when stroke_width > 0, will draw an outline below the text. Since this isn't a Pango feature, we can't do markup for outlines. (Maybe make that a feature request to Pango if you want it.)
Implements #51
With the new design, we take the load off of deck.rb and simply delegate methods over to the new conf.rb. This means that things like `antialias` is now available as a method to the normal Squib scripts for easy checking (without being mutable). Squib::Conf also handles parsing and defaults, and any potential input validation we need to do in the future.
Typographer is also set up now as a deck-wide configuration. This may change in the future if we want typography customization per-command, although that seems like a strange use case.
Lots of tests for this one, and lots of cross-cutting concerns in this commit.
This commit also includes some tweaks to rspec tests, including tagging of slow tests for a `rake spec_fastonly`
Conflicts:
spec/samples/samples_regression_spec.rb
spec/spec_helper.rb
squib.sublime-project
Andy Meneely