Docs, Cleanup, Tooling

This release brings a lot of needed updates to tooling, documentation, and the general flow/API.

Breaking

• Rewrite the majority of the storage module. This includes an entirely new interface.

Tooling

• Documentation w/ Biblio - This is very much an initial stab at a problem that requires much more work and effort, but for now there are at least some docs that can be parsed by a human.
• Travis CI - CI and testing mean we will hopefully have less issues with breaking folks stuff. This also has a long way to go.

API

• channels_messages_create / channels_messages_modify now support message sanitization via the new module disco.util.sanitize. Most users will want to flip this on for any messages that contain user-generated or passed content.
• Added support for multiple attachments when sending messages. This deprecates the attachment kwarg in favor of an attachments kwarg, holding an array of attachments.
• channels_messages_reactions_get supports pagination
• Added guilds_invites_list
• Added users_me_guilds_delete
• Move to API v7, which includes new errors array. Can be viewed within an APIException via the errors property. This also includes an update to the exception message format.
• Complete implementation of Client.update_presence
• Add support for NSFW channels
• Added various new fields and functions to Guild type
• Message.create_reaction renamed to (the previous version being deprecated) Message.add_reaction

Bot

• Refactor of the way we implemented command groups. This fixes various errors and removes the hard cap of 100 commands.

ETC

• Add log-level CLI flag
• GatewayClient now keeps some state which allows introspection of resumes (and the number of events replayed)
• Various fixes to state tracking

Obviously the above is a non-exhaustive list, this release included a ton of bug fixes and issues related to voice and other components.