Fixed bug with Data::Lists deleting their contents on destruction
Fixed bug causing a crash on Windows and added logic for the Center Gradient checkbox
Fixed #128 - an out of date option database no longer causes a crash, also added a reset preferences button to locate the new database
Added select flag to MO layer to re-enable cube file dumps
Removed annoying dialog that popped up when closing the last window
Fixed #129 - use of operator() in the Data::Grid class.  Also fixed decimation bug in the SurfaceAnimator