Ver 1.01 fixes a lot of collision issues with the lasers because collision boxes were too big giving the player a false death when it looked like they weren't touching it.
Player sometimes clipping through stairs has been fixed (well in my testing) but if the player does happen to clip through they will die and respawn at the new checkpoint thats at the top of the stairs.
Also tweak the black block that squishes you so that you have a split second chance of sliding out.