Version: 3.0.0-dev.1
This is a major release. So many things were changed.
Following issues/PRs were fixed for this release:
* #290: Create semver 3.0.0-dev.1; mostly improving in
* documentation: new layout to distinguish from the semver2 line.
Also new logo, removed occurances of Python2, describe changelog
process with Towncrier and update release process.
* Introduce `changelog.d` directory for Towncrier. Used to
improve process of our Changelog generation.
* Remove old code in regards to Python2; also testing it against
3.8, 3.9-dev, and 3.10-dev
* #234: Simplify `setup.py`
* #270: Configure Towncrier
* #276: Document how to create a subclass from `VersionInfo` class
* #291: Disallow negative numbers in `VersionInfo` arguments for
`major`, `minor`, and `patch`.