Version 0.9.50

  * modif: --output split in two commands, --output and --output-stderr
  * feature: per-profile disable-mnt (--disable-mnt)
  * feature: per-profile support to set X11 Xephyr screen size (--xephyr-screen)
  * feature: private /lib directory (--private-lib)
  * feature: disable CDROM/DVD drive (--nodvd)
  * feature: disable DVB devices (--notv)
  * feature: --profile.print
  * enhancement: print all seccomp filters under --debug
  * enhancement: /proc/sys mounting
  * enhancement: rework IP address assingment for --net options
  * enhancement: support for newer Xpra versions (2.1+) -
     set xpra-attach yes in /etc/firejail/firejail.config
  * enhancement: all profiles use a standard layout style
  * enhancement: create /usr/local for firecfg if the directory doesn't exist
  * enhancement: allow full paths in --private-bin
  * seccomp feature: --memory-deny-write-execute
  * seccomp feature: seccomp post-exec
  * seccomp feature: block secondary architecture (--seccomp.block_secondary)
  * seccomp feature: seccomp syscall groups
  * seccomp enhancement: print all seccomp filters under --debug
  * seccomp enhancement: default seccomp list update
  * new profiles: curl, mplayer2, SMPlayer, Calibre, ebook-viewer, KWrite,
  * new profiles: Geary, Liferea, peek, silentarmy, IntelliJ IDEA,
  * new profiles: Android Studio, electron, riot-web, Extreme Tux Racer,
  * new profiles: Frozen Bubble, Open Invaders, Pingus, Simutrans, SuperTux
  * new profiles: telegram-desktop, arm, rambox, apktool, baobab, dex2jar, gitg,
  * new profiles: hashcat, obs, picard, remmina, sdat2img, soundconverter
  * new profiles: truecraft, gnome-twitch, tuxguitar, musescore, neverball
  * new profiles: sqlitebrowse, Yandex Browser, minetest
  * bugfixes