- Flesh out ss-core.
- Adapt ss-gui.  (Find SmartShelf.fl!)
- Sync with updated releases of prjlibs.
- Finish libargus and argusd.
- Update pressure.c to use libargus.
- Clean up rfid_send().
- Implement SIGCHLD handling in child.c using djb's self-pipe trick.
- Release to Michael Youngblood.
