Merge pull request #975 from dannymidnight/stable

Fix invalid method call for strip_trailing_seperator in configuration
Revert "Merge pull request #975 from dannymidnight/stable"

This reverts commit af1892be9b3a7a37bf81a1ccffc2bb9f76ff61c0, reversing
changes made to 587c2e505088501fabe4458be55a905f6a5f2f27.
Update index.haml
Merge pull request #1572 from jatemack/patch-1

Update index.haml
Fix broken tests for 1.9.3+
Sass dependency is wrong.
Remove unused variables.
Don't leave FD open.
Atomically write css files from compass
Atomically write sprite files.
Don't remove the sprite file if it's going to be replaced.
Pick up the latest fix to atomic writes in sass.
Version bump: 0.12.4