Datasette-publish-vercel

* The `--token` option now works as documented. 19

- New `--generate-dir` option for generating a Now app in a specified directory without immediately deploying it. 18
- Now installs [pysqlite3-binary](https://github.com/coleifer/pysqlite3/) which provides SQLite 3.31.1 (a major upgrade from 3.7.17, bundled by Amazon Lambda) - this means FTS5 and json1 are both now available. #17

* New `--public` option for publishing the underlying generated source code - 15
* Improved unit tests

* New required `--project` argument to specify Now project to deploy to - 3
* `metadata.json` is now correctly loaded by deployed code - 6
* Uses `--confirm`, `--no-clipboard`, `--prod` arguments to `now`. The `--no-prod` option can be used to deploy to staging first.
* New `--debug` option to turn on Now CLI debug output - 8

* First working version