Rename --ignore-* to --skip-* to be consistent with result status SKIPPED.  Fix progress display for skipped tests.
Cleanup --help output.  Rename --tags to --tag since it can be repeated.
Fix tags-match? bug.
Display tags in --list-tests output.  Fixes #25
Switch back to failures report by default.  Too much progress output to rely on failure displays there.
Merge pull request #40 from cgay/dev

Testworks fixes