create_routes now doesn't launch them automatically because routes are put together before the socket actually becomes avaliable.
create_exchange_map previously used the wrong index for the route list.
There is now a universal Route class from which ServerRoute and ClientRoute inherit.
Routes are now handled as numbers by the networking layer. This changes requires the first message to be a dict of all routes with their associated ids. This way only 2 bytes are used per message, not 16 like before.
