What’s the current policy on bug fixes?

People have found a couple of bugs on my entry so far (one pertaining ambient light levels, the other the behavior of the ESC key)… I’m I allowed to correct these bugs (since the first one kind of ruins the second level, and the other is just silly)?

I also have another bug concerning full screen (if the resolution is not that of the desktop, it just shows a black screen), would like to fix that so that people don’t have to edit a text file…

I remember we had some compos that allowed for bug fixes after the end, but I’m not sure what’s the current status…