2. Implement new setCallback() mechanism to wrap setTimeout() and setImmediate().
2. Minor change to P2 management; remove context-bound callbacks.
3. Reduce window size and font size for peripheral UIs.
4. Implement <label> for file names on ColdLoader Load table.
5. Correct placement and color of buttons on Console and SPO.
6. Minor wiki updates for UI changes.
7. Rework SPO implementation to eliminate ".that" properties, implement setCallback(), and fix long-standing bugs that caused flaky operation.
2. Change name of CentralCentrol bit() method to bitTest().
3. Correct length of data sent to printer by IOUnit if I/O descriptor has a zero length.
4. Implement Processor.isP1 property to optimize testing for Processor 1 vs 2.
5. Implement ability to delete the IndexedDB database for the disk subsystem in ColdLoader.
6. Implement "purist" mode in B5500Console to suppress display of emulator's extra annunciators.
7. Correct behavior of Input Request and Ready controls in SPOUnit.
