+todo:
* Unicast responses/queries
-* Known-Answer suppression
-* Truncation
-* Probing/Conflict resolution
* Legacy unicast
-* really send goodbye packets
+
+* add SRV and TXT records referenced from PTR records automatically to packet
+* add A and AAAA records referenced from SRV records automatically to packet
+
+* allow NULL bytes in TXT records
+
+done:
+* Probing/Conflict resolution
* uniqueness
+* respect escaping in name serialization
+* really send goodbye packets
+* refresh subscribed records only
+* FLX_DNS_TYPE_ANY support
+* Known-Answer suppression client part
+* Known-Answer suppression server part
+* make flx_server_add_text() and flx_server_add_service() variadic functions
+* name compression
+* remove expression "rrset" from source files
* defend our entries on incoming goodbye
+
+