todo:
* release!
+* support for special domain PTR records based on local IP subnet address
+* Introduce AvahiProtocol
+* drop trailing dot on avahi_normalize_name()
+* c++ support
done:
* Probing/Conflict resolution
* enlarge packet in case a record/query is too large to fit in a normal packet
* reflector
* test against apple test suite
+* sensible logging