May fix a crash, may eat your cat.  If it breaks, you get to keep both
the pieces.

<mcmlxxix> deuce: quit prompt does not clear itself when you say no, and end turn prompt does not clear itself no matter what you say

can only renamed *unnamed* heroes (can't rename named ones).

when update()ing, don't change the marks/pointer unless the position has
changed.

runs.  This means that you get to see all events since you last played, rather
than todays events.

quoted-printable, likely in rev 1.23 when Deuce introduced the 'extra_headers'
property. This should fix that.

changed from the last shown state.

how they are identified.  Assign them to -1 and move them to -1/-1 instead.

in the global namespace it stays there forever.

class result in more efficient screen updates.

We still need a Map class to get the overlay updates out of the ArmyList class
and make the map updates more efficient as well.

Prevents the last city from hanging out there after the city is unselected.

army list object instead of re-creating it.

position inside the map with wrapping.

When avpnt is outside of alist, force it to the end.

Still need to address the alist update and showarmies() problem in info_mode
and make the alist thing do The Right Thing with avpnt instead.