------------
- Fix authentication error 'Connection reset by peer'
- Moves CI from Travis to Github Actions [141](https://github.com/lucasrcezimbra/pyitau/issues/141)
- Add initial structure for Sphinx documentation [16](https://github.com/lucasrcezimbra/pyitau/issues/16). Thanks to [DuyguKeskek](https://github.com/DuyguKeskek)
- Update dev requirements
- Adds pre-commit [108](https://github.com/lucasrcezimbra/pyitau/issues/108)