[NEW] quickdraw:  A reimplementation of QuickDraw

Add region_geometry().  It returns a Point-like structure containing the
number of vertical coordinates, and the number of horizontal coordinates
in the region's widest latitude.
[NEW] qd-tests:  Test quickdraw::region_geometry()
quickdraw:  Add set_region_bbox()

Given extended region data, calculate the bounding box.
qd-tests:  Test quickdraw::set_region_bbox()
Merge branch 'quickdraw-region-utils'