Add sass-spec as a submodule
Add basic test runner for sass-spec
Add inlineList for evaluating all variables
Use inlineList when compiling an SCSS document
Adjust print rules based on sass-spec
Inline variables on entities before flattening the structure
Evaluate nested rulesets

This might still be wrong, as I'm not sure if the recursion can modify
the parent state?
Extract entityList parser
Cover all the missing edge cases that were failing

Now that we have sass-spec, there will be a lot more edge cases that
need to be unit tested in order to fix the broken specs.

This is one of those. It's much better to add the regression specs
instead of just relying on sass-spec.
Merge pull request #4 from darthdeus/sass-spec

Add sass-spec runner