Hello, Only had a quick play with the demo version, but there's a couple of things that I would need adding.
1) When importing files, would be nice to have an advance option to select sprite sizes as well as frames.
2) Been able to import a sprite sheet along with the JSON file info would be even better and been able to assign frames to animations (JSON files normally hold sprite sizes, locations and pivot point info when you pack a sprite sheet) .
3) Some kind of basic building frame for animations would be good to link together special actions.
For example - walk -> turn.
Could also be used for sorting out animations like jumping - jumping + shooting. If we could have some kind of matrix for actions assigned to action keys (jump / shoot / action) for example.
For example Jump would have:
No button = Jump animation
Jump = Double Jump animation
Shoot = Jumping + shooting animation
Action = Dash animation.
Don't have to have any extra movement code (no dash movement), but just play the animation. This would allow the user to see if the animations flow into each other better.
Either way, I like your program and I'll be buying it later today.