Cihai

- 291: Convert to markdown

- Fix cihai-cli and sqlalchemy versions

console
$ pip install cihai-cli


This made deploying cihai + cihai-cli and pinning packages extremely laborious.

We can reinvestigate this model in the future.

via: **[cihai326](https://github.com/cihai/cihai/pull/326)**, [cihai-cli#279](https://github.com/cihai/cihai-cli/pull/279)

- Update `black` to 21.6b0
- Update trove classifiers to 3.9
- Update unihan-etl to 0.12.0 (removes python 2.7, 3.5 support)
- 288 Remove python 2.7, 3.5 support. Remove `__future__` and unused modesets

console
$ pip install cihai[cli]

- issue Remove version constraint from cihai-cli to satisfy pip's 2020

resolver: <https://pip.pypa.io/en/stable/user_guide/#resolver-changes-2020>

- 285 Move packaging / publishing to poetry
- 284 Self host docs
- 284 Add metadata / icons / etc. for doc site
- 284 Move travis -> github actions
- 284 Overhaul Makefiles
- 283 Move from Pipfile to poetry
- Improvements to plugin/extension system

cihai 0.9.0p1 (2019-08-18)

- Repin requirements/cli.txt dependency, again

cihai 0.9.0p0 (2019-08-18)

- Repin requirements/cli.txt dependency