@strong{Incompatible} encrypted packet format changes. Older versions
are not supported.
@item
+@command{nncp-bundle} command can either create stream of encrypted
+packets, or digest it. It is useful when dealing with stdin/stdout based
+transmission methods (like writing to CD-ROM without intermediate
+prepared ISO image and working with tape drives).
+@item
Single background checksum verifier worker is allowed in
@command{nncp-call}. This is helpful when thousands of small inbound
packets could create many goroutines.