Added
- [proselint](https://github.com/amperser/proselint) tool plugin and tests. (Thomas Denewiler, tdenewiler, #38, 39)
- [write-good](https://github.com/btford/write-good) tool plugin and tests. (Thomas Denewiler, tdenewiler, #41)
- reStructuredText discovery plugin and tests.
- [rstcheck](https://github.com/myint/rstcheck) tool plugin and tests.
- [rst-lint](https://github.com/twolfson/restructuredtext-lint) tool plugin and tests.
Fixed
- Specifying an encoding when calling open (pylint: [W1514](https://pylint.pycqa.org/en/latest/technical_reference/features.html)).