Unihan-etl

Breaking: pytest fixtures renamed, data moved (294)

- "quick" fixtures:

- Data has been moved from `tests/fixtures` to
`src/unihan_etl/data_files/quick`
- Fixtures prefixed by `sample_` in the name have been renamed to `quick_`

- "quick" and "full" fixtures: Fixed ability to access data files from outside
`unihan_etl` package

Development

- ruff: Code quality tweaks (295)

Features

- pytest plugin: Add cached fixtures for `UNIHAN` (291)

After initial download of UNIHAN.zip, an 11 second testrun on unihan-etl's
test can go down to 1.5 seconds - eliminating redownloading and extraction.

Bug Fixes

- pytest plugin: Revert fix of `zshrc` fixture's `skipif` condition (293)

It was fine as-is.

_Rolled back_

Bug Fixes

- pytest plugin: Fix `zshrc` fixture's `skipif` condition (292)

_Maintenance only, no bug fixes, or new features_

Internal changes

- ruff: Add additional linters, apply code fixes automatically and by hand
(290)
- Typings: Extract `LogLevel` and `UnihanFormats`

_Maintenance only, no bug fixes, or new features_

Internal changes

- zhon: 1.1.5 -> 2.0.0 (289, fixes 282)

[Release notes](https://github.com/tsroten/zhon/blob/v2.0.0/CHANGES.rst#v200-2023-06-24)

Fixes pytest warning related to regular expressions.