* Add PyTrackDat to PyPI (1, 2)
* Avoid overwriting files if no relations are specified during analysis
* **Add snapshot system** for database revisions (9)
* Enables users to keep versions of their database and restore if they
mis-import, accidentally delete, or otherwise create an error in their
database.
* **NOTE:** Snapshots **are not** backups. Make sure to always back up your
database, and possibly even back up historical snapshots as well.
* Fix Django administration site list display for data
* Fix Django Advanced Filters application not functioning correctly
* Significantly expand documentation
* Fail earlier if design file is incorrect
* Validate security of administrator passwords (4)
* Add `Generated by PyTrackDat` comments to generated files
* Update Django to 2.2.1
* Other small improvements and bug fixes