Whitespace.
Make notifiers closed under composition.
Provide colored documentation output.
Implement assert_equal and fail.
Split unit and integration tests.
Simpler documentation formatter implementation.
Add evaluate_start callback to notifiers.
Implement histogram timings for spec run times.
Double support, head of other stuff, I fail at small commits.
README and some other minor fixes.
Merge branch 'master' into gh-pages
Updating docs.