Merge branch 'search' into 'master'

inc/lektor/cmd.h

inc/lektor/commands.h

inc/lektor/database.h

inc/lektor/defines.h

inc/lektor/macro.h

src/cmd.c

src/commands.c

src/database/config.c

src/database/find.c

src/database/open.c

src/database/playlist.c

src/database/queue.c

src/database/stickers.c

src/database/update.c

src/database/user.c

src/main/lkt.c

src/mkv/write.c

src/net/listen.c

src/uri.c

src/utils.c