Genbadge

- Fixed the release message.

See [documentation page](https://smarie.github.io/python-genbadge/changelog.html) for details.

- `genbadge coverage` command: fixed `ImporError` with `defusedxml`. Fixed [14](https://github.com/smarie/python-genbadge/issues/14).

See [documentation page](https://smarie.github.io/python-genbadge/changelog/) for details.

- The tests badge now simplifies when the success rate is 100%, which is the case in the vast majority of projects. Fixes [12](https://github.com/smarie/python-genbadge/issues/12)

- Now using `defusedxml` to fix a [known vulnerability](https://docs.python.org/3/library/xml.etree.elementtree.html). Fixes [#11](https://github.com/smarie/python-genbadge/issues/11)

See [documentation page](https://smarie.github.io/python-genbadge/changelog/) for details.

- Added `flake8` command. Fixes [3](https://github.com/smarie/python-genbadge/issues/3).
- Added a "silent" flag `-s`. Fixes [10](https://github.com/smarie/python-genbadge/issues/10)
- Added a verbosity flag `-v`. Fixes [1](https://github.com/smarie/python-genbadge/issues/1)
- Python 3.9 is now officially supported. Fixes [9](https://github.com/smarie/python-genbadge/issues/9)

See [documentation page](https://smarie.github.io/python-genbadge/changelog/) for details.

- Fixed bug with writing to stdout. Fixed [8](https://github.com/smarie/python-genbadge/issues/8).

See [documentation page](https://smarie.github.io/python-genbadge/changelog/) for details.

- Completed CLI help for subcommands. Fixes [5](https://github.com/smarie/python-genbadge/issues/5)
- Badges can now be redirected to `stdout` using `genbadge <cmd> -o -`. Fixes [4](https://github.com/smarie/python-genbadge/issues/4)

See [documentation page](https://smarie.github.io/python-genbadge/changelog/) for details.