Drafted client GUI app for ARServer.  Not rigtht quite right yet.
Merge branch 'master' into SCDemo
Merge branch 'master' into SCDemo
WIP: Alternative UI for composing.
Merge branch 'master' into SCDemo
Merge branch 'master' into SCDemo
Misc cleanup
Restructuring.
Combined the full and subset display.
Removed the flicker by making the components mutable.
Rewired clipwarn, renderstus and enhance.

Problem with enhance stil....not sure what.
Fixed enhance button.
Fixed flicker on transfer-only change.
DRAFT Subset aggregates wrapper (saves a copy on enhance).
Combined subseting to a single wrapper.
Removed subset task.

Does it in the full render or as a function call (it is just a wrapper now).
Modified overlay/enhance display.
Corrected comments.
Progress bar (optionally) moves more often.
All MemMapLists share the same thread pool for parallel bounds calculations.