Where-to

New
- Omit cartouche when background is relatively uniform
([14](https://github.com/blairconrad/where-to/pull/14))

Changed
- Stop displaying subject in list mode ([10](https://github.com/blairconrad/where-to/pull/10))

Fixed
- Today's recurring appointments not found when run before 00:15 ([5](https://github.com/blairconrad/where-to/pull/5))
- Duplicates shown when recurring appointment has an exception but for the original day ([11](https://github.com/blairconrad/where-to/pull/11))

Fixed
- `next` option doesn't always get next meeting ([2](https://github.com/blairconrad/where-to/pull/2))
- Exceptions to recurring appointments not shown ([6](https://github.com/blairconrad/where-to/pull/6))

Additional Items
- Add `test` task, invoked by `poetry run task test`
- Modularize the code a little
- Download get-poetry to `TEMP` directory on AppVeyor
- Add characterization tests for lock mode ([8](https://github.com/blairconrad/where-to/pull/8))

Additional Items
- Use HTTP Basic authentication for PyPi
- Have poetry publish without interaction

Additional Items
- Use HTTP Basic authentication for PyPi