Fixed bugs and improved graphics!

I used pinetools.com to make the gradients of the backgrounds! :D It was very helpful, indeed.

I also decreased the volume of the song. So it doesn't kill your ears upon loading! ;)

Added checkpoints to level editor! It might be glitchy, though, so beware! :) (I also changed its mechanics for the level editor so Level 10 may be slightly different!)

I am still working on making the saved levels but it is in progress! :)

I also fixed level editor bugs.