[Changes] Use the debian format that I like.
Version 0.1.0
I decided to rename the module to CSS::Sass.

There are a lot of CSS::* modules on CPAN (so there's precedent) and this
way it gets to drop its ugly ::XS suffix (which was only needed because
Text::Sass exists).
Move sass.xs into the lib heirarchy so it's next to it's .pm brother
[Build.PL] Comment on annoying clang warnings.
[Changes] Document module name change.
[Build.PL] Don't try to pass clang options to non-clang compilers.
[CSS::Sass,Changes] Version 0.2.0