* VoiceConnection rework
- improves codebase
- removes concept of pending connections
- attempts to fix memory leaks by removing EventEmitter listeners
- makes voice connections keep track of its own channel when it is moved by another user
- allows voice connections to reconnect when Discord falls back to another voice server or a region change occurs
- adds events for some of the aforementioned events
* Removed unused code
* More clean up / bugfixes
* Added typedefs to Status and VoiceStatus constants