Enhancement: Replace `flxanimate` with `flixel-animate`#18

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CrusherNotDrip wants to merge 2 commits intoalphafrom

enhancement/flixel-animate

Commits on Nov 24, 2025

jarvis... slime out flxanimate and replace him with flixel-animate. On it sir!

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TechnikTil
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`Paths.content.animateAtlas`, and attempt for DJ Visualizer
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