Issue #5: The Handler is now being stored in the Thread properly. Apparently there is some sort of bug with using Thread.GetNamedSlot on Mono, so we're now using Thread.AllocateNamedDataSlot.
Merge branch '0.0.5' of github.com:hydrais/arc into 0.0.5

Conflicts:
	Arc.WebSockets/UI/Elements/Element.cs