Build 38

• (someone forgot to fill these notes out for the previous builds, so just imagine rows & rows of fixes/changes)

Build 39

• Fix leaving halfway through Level 2 soft-locking other levels
• Fix Level 3 being selectable if you haven't completed Level 2
• Fix Level 2 not checking whether you're looking at the top-most node when it changes state

(Thanks to strangeglyph for finding these)