Issue #38 - allow +damage/scan to work even for chars not in the room.
Issue #37 - Add +sweep command.
Issue #39 -
Several changes to how explosive damage works:

1. Concussion hit location is gone; it uses a regular random hit location roll.
2. Lethality mod for being right next to the explosion is now +30 instead of +50.  50 was just overkill.
3. All explosive weapons have had their penetration values adjusted.
4. Anti-vehicle explosive weapons are now named "AP" instead of "HEAT" for consistency with the ranged weapons.