Ensure real values are used in interpolation #22
Merged
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Fixes https://discourse.julialang.org/t/imageedgedetection-the-basic-usage-example-will-not-compile/68628
I'm not quite sure what happened, but perhaps #20 was run against an older version of ColorVectorSpace? Or perhaps we had a breaking release sometime during CVS 0.9.x? But I think the change to "poisoning" semantics for color arithmetic occurred with CVS 0.9.0 and that is likely what triggered this change.