THINGS TO DO

(These should be resolved before releasing the next version.)

Fix drawing of cylinder areas.

Find out if giving move-to order can ever cause reserve bit to be set,
fix if so.

Fix modes when switching from design back to game.

Fix where moving units while designing leaves leftover images of
units on own side.

Update interface-specific design tool doc.

In Windows version, handle error displays prior to tcl/tk interface
setup without needing console.

Fix behavior of protection table.
