+ support multi core (show cpu usage per process)
+ move get_cpu_usage() out from functions.c, it is an os-dependant function
+ change priority numbers against an enum with text labels Low Medium Normal
  High Very-high
+ figure a proper way to get the cpu usage of a process, currently the
  time/old_time is messy and BSD doesn't even do it this way which makes this
  os dependant

+ settings dialog
  + 1-move the current Preferences submenu
  + 2-switch the button action to show the dialog
  + 3-drop the submenu
  + CPU precision with 2 decimals

+ *BSD support with the 'kvm' files
+ ability to switch to a tree-store
+ sending custom signals
+ tray-icon