1. Initial implementation of a datacom terminal.
2. Initial implementation (read-only) of magnetic tape drives.
3. Further work towards getting P2 to function (but not working yet).
4. Allow device driver classes to be optionally included in the global UI script.
5. Fix callback arguments handling in SetCallback.
6. Decrease width of SPO window slightly.
7. Improve trapping and printing of SPO keystrokes, based on datacom implementation.
8. Minor performance tuning improvements.
9. Dump raw header words in octal in tools/B5500DiskDirList.html script.
10. New wiki pages and several updates to existing ones.
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.
