So I first started the older version which felt very incomplete.

Second one was better with music and the logo working etc.

One thing that instantly killed me was that I jump by RELEASING space. This us odd... I do see that she jumps higher after holding it down a bit, but it felt much smoother jumping around in the first version.

You should try enabling anti-aliasing! It would instantly make the game look twice as good. 

Nice particles for the spell, juicy stuff.

A level design thing: having spikes under a platform that cannot be seen from a jump off point is not very kind to the player. 

It's nice that you added coyote time, that's always a platformer-killer for me when it's missing :)

Never figured out how to get passed the stone knight...

Next time, ensure you get some sound effects into the game to give some feedback on the actions the player is doing. They can be crappy but will still make it feel much much more satisfying running around and shooting stuff.

Keep it up!