NicTool 2.24 released.

[matt]

Changes:

   • Export to DynECT Managed DNS service
   • Exports to BIND using nsupdate (thanks abeeson!)
   • Exports to Knot & NSD improved and documented
   • SQL: added nt_nameserver_export_type table
   • SQL: added nt_nameserver.address6 (IPv6 address)
   • SQL: added nt_nameserver.remote_login
   • BIND exports, don't delete zone file if zone deleted and re-added
   • more reliable imports of ip6.arpa zones
   • more reliable sql/upgrade.pl
   • more user-friendly sql/create_tables.pl
   • API: return nt_zone_id in edit_zone results

Much of the documentation has been improved and moved to the GitHub wiki.