Toggl-to-sqlite

What's Changed

* Convert to pyproject toml by ryancheley in 27

**Full Changelog**: https://github.com/ryancheley/toggl-to-sqlite/compare/0.6.0...0.7.0

This release is essentially a refactor.

Features

- added `cog` to autogenerate readme
- added issue templates for easier contribution
- added contribution guide
- added `pre-commit`
- dropped support for Python 3.6

This release includes a contribution guide to help future contributors (hopefully!).

I also added `black` formatting

Finally, I added Python 3.10-dev to the testing matrix

Merged the enhancement submitted by JakobGM to

* include current and archived projects
* documentation improvements to make it clearer how to use the `since` option

In this release I removed the api_token from the workspaces table. The presence of this field presented a security issue if a user published their sqlite db to a public source (like Vercel).

The only change is the increase in test coverage. No new features