Merge branch 'master' into chain-fix-take2

Knot.files

configure.ac

doc/reference.texi

man/kdig.1.in

man/knot.conf.5.in

samples/knot.full.conf

src/Makefile.am

src/common/evsched.c

src/common/evsched.h

src/knot/conf/cf-parse.y

src/knot/conf/conf.c

src/knot/conf/conf.h

src/knot/server/zone-load.c

src/knot/server/zones.c

src/knot/zone/semantic-check.c

src/knot/zone/zone-dump.c

src/libknot/edns.h

src/libknot/rrset-dump.c

src/libknot/rrset-dump.h

src/libknot/zone/zone-contents.c