Nice job. I personally wouldn't switch over from my current sprite editor. I'm sure for a lot of people it's more about the workflow they're comfortable with, and I've been a pretty happy Aseprite user for years - practically a decade at this point.

The only small thing I might suggest adding is the ability to change the loop style from a regular loop to a ping-pong style loop.

https://github.com/aseprite/aseprite

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