Used command "magick" over deprecated or removed "convert".

[Daniel-KM]

No description provided.

[zerocrates]

Yeah, I don't mind shifting to magick especially as newer ImageMagicks will now complain about using convert.

I'm just going to have to try to do a little research on how far back we can expect magick to be there and whether we should be using magick convert vs. magick... my guess is that we're not doing anything complex enough to where the differences in syntax will matter. But I'll double-check. Users of GraphicsMagick might also be another problem case, but I think we already don't work with GraphicsMagick, and we don't purport to.

Of course the way you're doing it here will fall back to convert so it won't be particularly problematic (assuming there are no issues with the 6 vs. 7 syntax).

[Daniel-KM]

yes, there is no emergency, main distributions will keep a link to convert in next releases, so some decades.