If someone is interested, I could use some help testing. It's working
for me, and there are a few odd behaviors that I'm not sure are the
best. Let me know if you test it.

No new official release yet, but if you want to test, svn can be
fetched with:
svn checkout http://semicomplete.googlecode.com/svn/keynav

Changelog is:
- Include support for multiple screens.
  * When 'start' happens, the region will be the size of the current
display
    (wherever the mouse is)
  * Moving the region outside of the current display will move it to
the next
    display (right or left). This currently only works with Xinerama.
  * History works as expected (move to the right display, history-back
goes to
    the previous display, etc)
  * When multiple Screen (non-xinerama) are found, XGrabKey on all
root windows.
  * Screens are sorted, if possible, from left-to-right based on x-
coordinate
    origin. This unfortuntely means, for now, only left-to-right
monitor
    configurations are known to be supported.

-Jordan