Leukoblast! 0.880

It's been a tough week, so we couldn't finish many things we are working on. We are changing the UI, adding different control settings... among other things, but we couldn't manage to finish them yet.

The changes:

• When you beat coronavirus' (the last boss) first form,  the second form(s) spawn, and also now all enemies nearby get destroyed, preventing overlapping and a lot of lag that came with it.
• We also made a small change to the animation of the second form.