* Response can now be a promise of the other types (string, [string])
* Client.nickname is an instance of NicknameTracker (and still callable).
* Tennu Modules 2.0.0 Integration.
** This was supposed to be for 0.9.0, but was needed first.
** Modules are now objects that have the following properties:
*** init: function (client, imports) => instance
*** requires: [string] OPTIONAL, names of modules
*** requiresRoles: [string] OPTIONAL, names of roles
*** role: string OPTIONAL
*** name: string Will be added for you unless you use client.initialize() directly.
