* Raise version number in `__version__`
* Update CHANGELOG
* Mention TestPyPI in `release-procedure.md`
* MANIFEST.in:
  * Exclude `.travis.yml`
  * Exclude `.github` directory (pretty useless in an archive/wheel)
  * Exclude `docs/_build` directory
  * Exclude temporary Python files like `__pycache__`, `*.py[cod]`
  * Include all `*.txt` and `*.rst` files

Co-authored-by: Sebastien Celles <s.celles@gmail.com>

Co-authored-by: scls19fr <scls19fr@users.noreply.github.com>