Todo list

1. veryhigh (done)
2. high (done)
3. medium (done)
4. low (done)
5. verylow (done)

Display done items.

1. Add completion for pfctl
2. Add completion for portaudit
3. Add completion for pw
4. Improve completion for pkg_tools
   1. Currently nothing listed
5. Improve init script */rc.d completion
   1. add restart
   2. add reload
   3. add support for prefix [fast|force|one]
   4. add status
   5. add poll
   6. add rcvar
   7. add a way to find extra arguments and automatically add it to completion (need examples scripts)
      1. postgresql (initdb)
      2. lighttpd (check)
6. Add completion for cu
7. Add completion for camcontrol
8. Add completion for acpiconf
   1. Check the type available from sysctl
9. Add completion for burncd
10. Improve completion for ifconfig
    1. Currently nothing listed
11. Add completion for vmstat
12. Add completion for iostat
13. Add completion for cdcontrol
14. Add completion for atacontrol
15. Add completion for usbconfig
16. Add completion for geom
17. Add completion for netgraph
18. Add completion bsdlabel/disklabel and fdisk
19. Add completion for mixer
20. Add completion for pciconf
21. Improve portupgrade completion
    1. Currently nothing listed