Merge branch 'master' into ddns-sign-fix

Knot.files

src/knot/ctl/knotc_main.c

src/knot/dnssec/nsec-chain.c

src/knot/dnssec/nsec-chain.h

src/knot/dnssec/nsec3-chain.c

src/knot/dnssec/nsec3-chain.h

src/knot/dnssec/zone-events.c

src/knot/dnssec/zone-events.h

src/knot/dnssec/zone-nsec.c

src/knot/dnssec/zone-nsec.h

src/knot/dnssec/zone-sign.c

src/knot/dnssec/zone-sign.h

src/knot/nameserver/update.c

src/knot/server/zones.c

src/knot/updates/xfr-in.c

src/knot/updates/xfr-in.h

src/knot/zone/estimator.c

src/knot/zone/estimator.h

src/knot/zone/zone-create.c

src/knot/zone/zone-create.h