Version 4.0.0

Older versions of this library will no longer work, do to an REST Api change

This closes issue #35

Added

• Added a rule34Py.autocomplete method.
• Added AutocompleteTag class.
• Added parameter to rule34Py.search method for excluding ai generated content.
  • Added unit test

Changed

• Updated API wrapper to support website’s new authentication system.
• The underlying website API now requires authentication (api_key and user_id) for all requests.
• Updated unit tests.