Changed protocol version to 5 (and umundo version to 0.5.0), added new rtp multicast api (only subsribers need to be aware if they are multicast or unicast now, publishers can publish to unicast and multicast subscribers simultaneously), the umundo-bridge is now able to relay multicast rtp as well (preserving the multicast group and port of the original subscriber), changed all apps/tools to use the new multicast api...