Day 37 completed

docs/Day 037.md

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+# Day 37
+
+I went ahead and did some extra stuff.  
+My "hero" is a mojito bmp for now. I'll eventually do something else for it.  
+I also added incremental build support for the codegen metaprograms.
+
+I originally wanted to make the assets on the fly (just as a break from the code),  
+but decided to just use his assets as this series is already going to take forever.
+
+I have the assets mapped to an "offical" directory within content, however they'll be naturally ignored on the repo.