Some nice additions and changes.

• Added new method: .coffee() . Makes a request to https://coffee.alexflipnote.dev which then returns a random coffee image URL.
• Token is no longer required due to the following method not requiring a token anymore: colour, colour_image, colour_image_gradient, birb, dogs, sadcat, cats, coffee.
• New Exception added: MissingToken, this is raised when a method that is not listed above is used without a token being present in the constructor.
• Removed .github_colours() since the endpoint it used is gone.
• .colour() .colour_image() and .colour_image_gradient() now accepts a "python like hex". E.g, 0x9a6b48. Also, it can take a # now.
• Suggestions are as always welcome, you can ping me in the AlexFlipnote server, #general_developers channel.