@dhgigisoave found in #2116 that heatmaps fail to render properly when an edge has more than (2^16)/2 cells off the screen.

To prevent this issue we should probably extend the existing dimension checks to throw an exception if any edge is length 32768 or greater.

A true fix may be achieved by rendering large 2D arrays with multiple Bitmaps, but that complex task may not represent a high development priority at this time. Users can always break their data into smaller arrays and display heatmaps side-by-side.