WIP on examples.
First additions for an XBee API.
Various old changes.
WIP upgrading to Netty 4.0.0.Beta1
Moved ZigBee interface to appropriate package.
WIP on ZigBee requests.
Got XBee requests working.
Fixes on XBee packet checksum computation.
WIP: receiving XBee frames seems to works. Still issues when trying to send frames.