Added using statement for comments
Added reference to pMixin project
Fixed comment
Simplified means of loading IType types from a CSharpFile
Added further test to make sure BasicClass resolves
Created MockSolution to ease manipulating Mock Solution files.  Updated tests to work with this infrastructure.
Moved logic for finding a CSharpFile in a Solution by filename to SolutionExtensions
Moved GetReferenceToDllInTestProject to dedicated helper
Updated ResolveTypes to only return Resolved Types that didn't have an error resolving.
Added OnProjectReferenceAdded method
TestVisualStudioEventProxy should be Singleton
Made method thread-safe
Fixed bug in how VisualStuioEventProxy was pulled form IoC
Copy Test Kernel to ServiceLocator
Added additional test to confirm file was reloaded
Made MockMicrosoftBuildProjectLoader thread safe
Added test stubs