v2.0.0

General changes:

• refactored all the code.
• replaced scrapers with api calls to speed up the info gathering process.
• updated documentation.
• removed parameter validations.
• added support for Wii U and 3DS games.
• improved test coverage.
• simplified the documentation of each method.
• separated api integration into different files.

Game Class changes:

• unified everything into one class instead of one per platform.
• renamed genres to categories.
• moved features (dlc, amiibo, etc) into a dict.
• changed developers and publishers into a list of strings.
• added class to handle the generation of urls for each nintendo online eshop.
• improved organization for the rating values (ESRB, PEGI and CERO).