- Various improvements when using A/B engines.
- Fix a rare desync issue.
- Always show all legal moves in the infobox.
- Obsolete info from A/B engines (from an earlier time in the search) will be grayed out.
- Option to display depth (for A/B engines only).
Some big internal changes to accomodate this; some chance of bugs; release candidate; blah blah blah.