Fix Version/s: None
Implement span-based overlap tests and spatial union, intersection, and difference operators for Footprints.
Should be split into subtasks; first task would be to come up with the interface, and then each operation to be implemented should have one subtask each.
If complete after
DM-1126 and DM-1127, these operations should be implemented in the SpanRegion class, and Footprint should delegate to that.
Paul Price added a comment -
See also HSC-1146.
DM-1128, this task must be referring to FootprintSet not Footprints