Merge branch 'zone-events-queue' into opt-refactor

man/knot.conf.5.in

src/knot/conf/cf-lex.l

src/knot/conf/cf-parse.y

src/knot/conf/conf.h

src/knot/main.c

src/knot/nameserver/axfr.c

src/knot/nameserver/ixfr.c

src/knot/nameserver/process_query.c

src/knot/nameserver/update.c

src/knot/server/journal.c

src/knot/server/serialization.c

src/knot/server/server.c

src/knot/server/server.h

src/knot/server/xfr-handler.c

src/knot/updates/apply.c

src/knot/updates/apply.h

src/knot/updates/changesets.c

src/knot/updates/ddns.c

src/knot/worker/pool.c

src/knot/zone/events.c