Today I Learned/Achieved

A brag document of myself.
Update late 2019: Now that I started working in a company, things I learn on a daily basis seem all to be more or less confidential. This document might not be as frequently updated.
Each New Years Day during my middle school era, I would review what I have done for the past year, trying my best to summarize into one sentence for each day, and post online. With life complexity shooting up, I stopped making annual reviews.
Recently, I have read about Julia Evans' suggestion of keeping a "brag document" at work. Sounds like fun!
For privacy concerns, I will focus on skills and achievements like such in this document, instead of jotting down every life event.
Here we go.