Minepi

Fixed a typo in the last release

Hopefully fixes the issue described in 5.
That's what happens when you rush fixes. I am sorry for that

Refactored the lib slightly. There are a few breaking changes however not really drastic ones.
The most significant one probably is removing the redundant MinePI

`from MinePI import MinePI`
became
`import MinePI`

Also introduced official docs which can be found here: https://minepi.readthedocs.io/en/latest/

Fixed pre 1.8 skin rendering

Fixed a few bugs in the rendering logic
Hopefully workflows work this time

Fixed the workflows