Update the docs and add a JSON Database type
What's Changed
- Update readme by @josh-read in #12
- Improve docstrings by @josh-read in #13
- Fix output path in example by @josh-read in #14
- Standardise database api by @josh-read in #15
- Add json database by @josh-read in #16
- Simplify structure by @josh-read in #17
- Complete facility example by @josh-read in #18
Full Changelog: 0.4.0...0.5.0