* major rewrite
* add support for multiple chains
* add mac whitelisting
* add support for multiple ssh daemons in parallel
* add an ipset report engine
* add mail notifications
* add suspend/resume functions
* add a cron wrapper to set an ipset related auto-timer for
  automatic blocklist updates
* add a list wrapper to add/remove blocklist sources
* add 19.x and Turris OS 5.x compatibility code
* sources stored in an external compressed json file
  (/etc/banip/banip.sources.gz)
* change Country/ASN download sources (faster/more reliable)
* fix DHCPv6/icmpv6 issues

Signed-off-by: Dirk Brenken <dev@brenken.org>