Best Moment: Probably when I saw my Emitter class iterating through the firing sequence actions provided to via the first level. This sequence of delayed but defined functions called at certain keyframes was successful I feel. It's less clean in some other languages. Especially if you don't have parameter lists with optional parameters.
Worst Moment: Trying to figure out how to deploy to multiple systems and realizing that I've probably been using GitHub wrong all this time. Feeling a bit guilty for spending some of borodust's development time in helping me deploy.