Should this program use magick instead of convert?

[peteroupc]

Since ImageMagick version 7, the convert command is deprecated and should be replaced with magick, which has the same functionality as convert. And changing this program over to the new command is trivial: it's mentioned only three times in VarietyWindow.py and in a few error messages.

However, is using convert instead of magick still needed by the variety program? Are there concerns with compatibility if magick were used?