Clean up imports.
Add rgbToXterm unit test.
Remove unnecessary variadic parameter.
Revert "Add rgbToXterm unit test."

This reverts commit 1a0442ee0cdc6b60ed91da29ef7daa047e583e59.
Refactoring and cleanup.
Merge branch 'master' of https://github.com/SyntaxColoring/Dapper
Merge in some work.