Improvements in Apex a34

Apex a34 fixes a bug which prevented smooth dragging of a window. Basically, Apex was not being smart about reusing the caches image in memory when the window position changed but the window size did not. Ah well.

I also made a change in the way drawing information is ordered in memory. This means a small speedup in drawing ( 5% or so, although I expected more).

Also, there is better auto redraw when zooming in and out. As a bonus, this action now gets recorded in Script Editor’s recording feature.