Add the standard CPAN git ignore file.
Annotate the "near misses" tests better.

The fail on 5.21.3 and more information was needed.

Also don't use is() to test true and false.
Truth is not always 1 and false is not always 0.
Merge pull request #1 from schwern/master

Annotate the tests for https://rt.cpan.org/Ticket/Display.html?id=99199