* Need to automaticlly add the PLC to the device list.
* Use PLC as scene controller/responder
* Save should save to currently opened file without asking.
* Save As should ask for new file name.
* KeypadLic configuration
* Send group commands
* Global "something changed" flag to trigger a save prompt on exit
* Find some way to mark devices as dirty and only program those devices
* Ping device dialog box
* Program timer support
* Schedule events
* Macros
* X10 support?

Nice to haves
* Serial PLC support
* Tabbed interface for main screen to reduce its width.
  - tab for scene editor
  - tab for device programming
  - tab for add device?
* Sort devices in Responder and Device Programming drop-down controls
* Make the list boxes sortable by clicking on the column header
