[patch] Made the method 'With(string, object)' valid for access modifier.
Updated version to v4.0.0-beta-build-8.
Renamed FixturingAttribute to SetupFixtureAttribute.
Renamed IFixtureUnderTestMethod to ISetupFixture.
Implemented setting up fixture on test level with attribute.
Deleted the TestMethodFixtureTransformer2 class.
Deleted the IFixtureUnderTestClass interface.
[major] Deleted the NamespaceFixtureTransformer class.
Deleted some unnecessary types.
Rearranged the tests for setting up fixture.
Implemented setting up fixture on namespace level.
Resolved the code analysis warning.
Updated the ms bulid file.
Revert "Resolved the code analysis warning."

This reverts commit 949fd1a594f24c87d9a36a2fd90eb9296a5fbe64.
Updated version to v4.0.0-beta-build-9.