This was a very fun game! I'm not sure if the coyote jump is in already, but if it is, it may need to be increased a little, because the jumps still feel a little unforgiving.
I did find a really fun bug on the Everything Everywhere level. If you drop one ice block on top of another ice block, then the physics of both will no longer properly apply gravity, so you can push both over the hole and they won't fall. I didn't find any good exploits for this particular behavior, but thought I would point it out.
All in all, it was very cute and a bunch of fun!