Version 2.0.0a10

• (Breaking change) Removed the downscope_token() method from the OAuth2 class.
• Added support for the can_view_path parameter when creating new collaborations.
• Added a downscope_token() method to the Client class. This generates a token that has its permissions reduced to the provided scopes and for the optionally provided File or Folder.
• Added methods for configuring JWTAuth from config file: JWTAuth.from_settings_file and JWTAuth.from_settings_dictionary.
• Added network_response property to BoxOAuthException.