Mattermostdriver

'''''
Added Endpoints:
- `opengraph`
- `bots`

Fixes:
- Some pylint rules that failed have been fixed or where suppressed

Added:
- Support for Python 3.8
- Github actions with pylint is now active

BREAKING CHANGES:
- Support for python 3.4 was dropped

Thanks a lot to maxbrunet for his contribution!

'''''
Fixes
- Authentication without `auth` option works again

'''''
Features:
- Added authentication with .netrc

Thanks a lot to apfeiffer1 for his contribution!

'''''
Fixes:
- Fix documentation to make Json valid

Features:
- Added a configurable timeout 40

Thanks a lot to sahasrara62 for his contribution!

'''''
Fixes:
- Add missing endpoints to the driver

Thanks a lot to opalmer for this fix!

'''''
Fixes:
- Don't parse non JSON errors 31
- Logout before cleaning up 37

Thanks a lot to maxbrunet for these two fixes!