Resolves issue of ColyseusRequest only working with a single instance of settings due to its static nature.
ColyseusRequest is now no longer has static methods. Moved the requests object out of ColyseusManager and into ColyseusClient. Each client now has its own instance of ColyseusRequest that can be initialized with its own endpoint or ColyseusSettings.
Fixes https://github.com/colyseus/colyseus-unity3d/issues/156
Resolves issue of ColyseusRequest only working with a single instance of settings due to its static nature. ColyseusRequest is now no longer has static methods. Moved the requests object out of ColyseusManager and into ColyseusClient. Each client now has its own instance of ColyseusRequest that can be initialized with its own endpoint or ColyseusSettings.