6.10

• debian/compat, debian/control:
  • bump compat, fix vcs lintian warning, fix debhelper warnings
• usr/share/byobu/profiles/bashrc:
  • fix timer string logic
• snap:
  • removing, unused, never finished
• usr/share/byobu/keybindings/f-keys.tmux:
  • have F1 pull up the keybindings text