Cut version 0.0.1b5

Cut version 0.0.1b5

- Add missing dependency on ANTLR runtime.
- Lift easter() function from dateutils and remove that dependency from this project.  Original copyright and attribution in the code and the root NOTICE file.
- Make sure lockfile always sets locktime.  Use locktime in cron.py to optionally create a record of lockfile contention for future analysis.
- Improve cut_version.sh understanding of old versions.
- Teach cut_version.sh about PREVIOUS_VERSION...
- Add a blurb about fff.py in README.
- Add fff.py as an example but it's really a devtool that I used in the pre-commit hook.
- Clean up run_tests.py
- More messing with the project file.
- Update license to try to make the PyPi page look nicer...
- Make it clear that --config_allow_dynamic_updates doesn't take any argument.
- Add some more examples and a convenience method in config.py for terminating the program due to bad flags.
- Reference local files in wordle example.
- Better explain what the heck is going on in deferred_operand.py.
- Add an overall runtime line to the final report in run_tests.py.
- Adds timer next to progress bar in run_tests.py.
- Remove hardcoded properties list from DeferredOperand; use a c'tor param instead.
- Add a comment for future fields in SmartFuture.
- Make DeferredOperand handle sets, dirs, dels transparently by passing them along to the wrapped result.
- Make DeferredOperand work more transparently.
- Stop calling internal method _resolve in run_tests.py.
- Log an error message when something went wrong in run_tests.py.
- Do not let test names in results collide when we run one to capture coverage and another instance of the same test w/o coverage to check perf.
- Make run_tests.py keep track of test runtimes.
- Make run_tests.py tell you what's still running.
- Cut version 0.0.1b4