Test Case for issue #45
Test Case for issue #49
Test Case for issue #51
Test Case for issue #55
Test Case for issue #57
Test Case for issue #52
Test Case for issue #56
Distinguish pseudo classes (:) and pseudo elements (::) according to
CSS3 Selectors
Merge pull request #6 from UprootLabs/test-cases

Test cases
Fix tests for #52: do not test inherited colors and match conditions not
required for pseudo classes