- Update to version 1.6.21
* Implement rfc 7011 and include sender UDP port into unique
template identification.
* Add token 'dir' equivalent to 'flowdir' in filter syntax.
* Add optional print direction ascending or descending to output
of statistics -s and ordered printing -O.
* Avoid use_syslog name clash on certain OS.
* Honor -n flag when printing sorted flow cache.
* Fix uninitialized variable printPlain.
* Fix bug #223 limit matchig flows -c
* Restore old behaviour unlimiting output flows unless in -s stat
* Fix ft2nfdump nexthop fields
* Fix ft2nfdump extension map size
* internal: put output parameters in a single struct
* Fix GuessDir bug - issue #215