Enabling Case Conversion Test

This is for issue sass/libsass#461

Signed-off-by: Hampton Catlin <hcatlin@a002867f-d9b0-47ee-bdc3-c07d990ae810>
new test for invert issue at sass/libsass#456
Test for list-separator (needed for Breakpoint)
Enabled existing color tests.
Added a color test showing the conversion handling of colors and color variables.
Moved colors test back to todo, as it seems like it may fail at the parse stage.
Coerce color name string to a color in color-names test.
Update color_output test to include more variations, and match the formate preservation in sass 3.4.
Update color names to use 'gray' instead of 'grey'
Added more color output test cases to show libsass divergence.
Move more tests fixed by the libsass color changes
enable maps tests
whoops, other half of moving
Some normal Scss for decent benchmarks
Update to run the spec against 3.4
Fix this test to not error on S3.4
These selectors are no longer allowed in s3.4
Use the latest release of Sass, not 3.4.0
I think this test is totally invalid in Sass 3.4
Fix numeric selector tests.