Merge branch 'clean' into 'master'

inc/common/common.h

inc/common/macro.h

inc/lektor/commands.h

inc/lektor/database.h

scripts/init.sql

src/commands.c

src/common.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/main/lkt.c

src/mkv/mkv.c

src/mkv/write.c

src/module/mpv.c

src/net/downloader.c

src/net/listen.c