NCommandLine::GetFlagFile now returns an empty file if the flag does not exist (rather then CWD).
Rename NANO_FIXTURE/NANO_TEST to FIXTURE_NANO/TEST_NANO to improve mixing with other libraries.
Update to CATCH 1.0.3.
Added REQUIRE_SUCCESS for Windows NTestFixture usage.
Improved NTestFixture tag support, allow tags to be optional.
Make test descriptions optional.