[GB.TEST]
* NEW: TapParser can now parse subtests. Consequently, TestRunner assembles a tree of TestAssertions.
* BUG: Remove trailing '\r' characters from TapStream lines.
By our convention a subtest is opened by a "Test ..." line and closed by
its summarizing "ok" / "not ok" assertion.
This commit regresses on TInternals's reflection tests because I added
tests for the parser and runner which need event handlers to do their
testing. These are unintentionally detected as test methods.
