The public API of the taskchampion crate now contains the expected parts and no more, and has some better documentation. This moves the crate's external `tests/` into internal tests, as the TaskDB is no longer exposed as part of the crate API.
The public API of the taskchampion crate now contains the expected parts and no more, and has some better documentation. This moves the crate's external `tests/` into internal tests, as the TaskDB is no longer exposed as part of the crate API.