* Removed GuildUserExtensions and moved the methods to IGuildUser and implementations

* Made changes per fox's suggestion: Change->Modify. New Modify overload.

* Oops

* Per Volt: reimplemented new endpoints

* Fixing broken docstrings

* I forgot that docstrings are XML

* Implemented atomic add/remove role endpoints

* Removed  so people aren't irked

* Added single-item role add/remove methods

Added support for reaction 'me' field

Automatic animated avatar detection

This should resolve a plethora of relates issues, including user downloading not working (#542), possibly #531

Conflicts:
	src/Discord.Net.WebSocket/DiscordSocketClient.cs

Resolves #469

This is to support the new user image endpoint, which provides a parameter for image resizing.

there's a few different ways to select a user's roles from their role IDs, and this one seems to be the most efficient.

doesn't seem like there's any reason this shouldn't be included.