Revert "Fix 'InvalidOperationException: Sequence contains no elements' in CaretReferenceHighlightRenderer.Draw"

This reverts commit ef49522493fa2ca1e0d150eb38b0fb5085cc52af.
Revert "Add IOutputPad.GetOrCreateCategory()"

This reverts commit 032f01c73c55347b75821a22c0e9466dcc6905e7.
Revert "Fix file resolution when running XSLTs."

This reverts commit 37cf805feae0a3ac3a9dc5f9f497dcb515f405be.
Revert "Fix NullReferenceException in CaretReferenceHighlightRenderer.ColorizeMatch()."

This reverts commit 86c29273e655cd1b00fadac33f3f6f18c8bbcc34.
Revert "Remove obsolete tests."

This reverts commit 844d7f2c00328f3107fde26b8bb1fecd025e3691.
Revert "Add tests for EnvDTE.CodeClass.AddVariable()"

This reverts commit 30cac18994facbcfa1f23d2b944e6b550c9c7941.
Revert "fix bug in InsertWithCursor: should not scroll to top after start of InsertWithCursor-mode"

This reverts commit f69ce55bf0ea87b8bbb60c77f144775ad0b25252.
Revert "Add tests for EnvDTE.CodeInterface.AddFunction()"

This reverts commit 19cf43b9decc99aeececc62e81aca0bda8972fd2.
Revert "Remove separate project template repositories for NuGet packages."

This reverts commit e99013bcfed7184a26af1511489ba83dc65f9ae6.