Asynchronous Disconnection Refactor

Build: 3.6.0 (migration from 3.5.0)

Category: Core Tech

Progress: 13/33 (old 12/33) task completed.

Status: In Development

This refactor aims to improve efficiency and usability of the asynchronous disconnection code. Refactoring this will clean-up a lot of bugs such as infinite loading screens, server crashes, and client crashes, while also helping to assure that more of these issues don't occur in the future.