libsass 0.8.0

• Follow up the libsass upstream: 3.2.2 — See the release notes of Libsass 3.2.0, 3.2.1, and 3.2.2. [#61, #52, #56, #58, #62, #64 by Anthony Sottile]
  • Compact and expanded output styles [#37]
  • Strings and interpolation closer to Ruby Sass
  • The correctness of the generated sourcemap files
  • Directive buddling
  • Full support for the @at-root directive
  • Full support for !global variable scoping
• Now underscored files are ignored when compiling a directory. [#57 by Anthony Sottile]
• Fixed broken FreeBSD build. [#34, #60 by Ilya Baryshev]
• SassMiddleware became to log syntax errors if exist during compilation to sassutils.wsgi.SassMiddleware logger with level ERROR. [#42]