A simpler interface, modular caching, optional contexts

• client.Event() gives you compile time correctness, compared to the client.On(...) which is checked at runtime.
• Allow mentions
• resource based REST methods
• cancellation for REST methods is no longer part of the main signature. WithContext has been introduced instead
• new cache interface (mix of cache and creation layer for flexibility)
• removed json dependencies. json logic can now be overwritten using the disgord/json pkg
• reduce helper methods (such as disgord.Sort)
• better support for unicode emojis
• replaced install script with a template repo
• permission for guild insight and stream

Patches

• Member sometimes contained a empty guild id
• presence missing activities
• unnecessary allocations in func (m *Member) GetPermissions
• missing audit log events

Thanks to

• github.com/Lappy
• github.com/Jack073
• github.com/JakeMakesStuff
• github.com/hassieswift621
• github.com/EpsilonPrime