See [releases.md](https://github.com/PSLmodels/Tax-Calculator/blob/master/docs/about/releases.md#2018-10-25-release-0221) for a description of any API changes, new features, or bug fixes.
0.22.0
See [releases.md](https://github.com/PSLmodels/Tax-Calculator/blob/master/docs/about/releases.md#2018-10-24-release-0220) for a description of any API changes, new features, or bug fixes.
0.21.0
See [releases.md](https://github.com/PSLmodels/Tax-Calculator/blob/master/docs/about/releases.md#2018-09-11-release-0210--first-release-compatible-only-with-python-36) for a description of any API changes, new features, or bug fixes.
0.20.3
See [releases.md](https://github.com/PSLmodels/Tax-Calculator/blob/master/docs/about/releases.md#2018-09-06-release-0203--last-release-compatible-with-python-27) for a description of any API changes, new features, or bug fixes.
0.20.2
See [releases.md](https://github.com/PSLmodels/Tax-Calculator/blob/master/docs/about/releases.md#2018-08-10-release-0202) for a description of any API changes, new features, or bug fixes.
0.20.1
See [releases.md](https://github.com/PSLmodels/Tax-Calculator/blob/master/docs/about/releases.md#2018-05-21-release-0201) for a description of any API changes, new features, or bug fixes.