- May be related to #1215 but was unable to reproduce the issue
  before nor after the changes.

refs #1215 @2h

refs #1203 @1h

refs #1203 @10m

- Was not deleting RDATA at all.
- Since recent changes it tried to delete whole RRSets which was
  wrong (of course, see comments to xfrin_changes_t).
- Keeping track of removed RDATAs, deleting it after successful
  IXFR-in.

refs #1203 @3h

refs #1334 and fixes #1341

fixes #1342

- Added API function zonedb_expire_zone():
    The zone contents are removed, but the zone remains in the zone
    db.
- Using this in EXPIRE handling.
- Special handling of such zones in answering functions.

refs #1337 @1h

- Trailing garbage (i.e. more data than expected from the xxCOUNT)
  is ignored and the packet is processed as if there were no such
  data. (This behaviour may change later according to other servers
  - see #1336).
- If the packet contains less data then expected (xxCOUNT larger
  then real count of RRs in the corresponding section), FORMERR
  is returned.

refs #1333 @1h

- Both normal RRSets and the target SOA.

refs #1314 @30m

Conflicts:
	libknot/nameserver/name-server.c
	libknot/zone/node.c
	libknot/zone/zone.c
	src/common/slab/slab.c
	src/knot/server/zones.c
	src/knot/zone/zone-dump.c
	src/zcompile/zcompile.c

Debug code for leaks. A lot of changes in zparser, but still leaks quite a lot. Will fix in the next commit.

refs #962 @30m

refs #962 @1h30m

* Also fixed broken journal_walk() in case of insufficient node count.

refs #962 @5h

refs #1321 @15m

refs #1321 @30m

refs #1321 @15m

refs #1321 @5m

refs #1321 @20m