Mangadex

Correct parsing of manga query parameters involving the ones that are arrays

As of the mangadex API v5.0.11 the cover images are not returning something significant but I considered that it was worth having the methods in advance. This methods are:

* Get cover art list
* Upload Cover
* Edit Cover
* Delete Cover

I'm going to start making a dedicated wiki for documentation also, so stay tuned

Fixed some errors with the setup.py regarding reading and decoding the readme

The new methods in this versions are:

Public calls

* Get manga chapters and volumes
* Get Scanlation List

Private Calls

* Create Manga
* Update Manga
* Delete Manga
* Create Author
* Update Author
* Delete Author

Fixed a repeated keyword in the setup.py

Added the Custom Lists Objects as well as its methods.