Try Documentalist, my app that offers fast, offline access to 190+ programmer API docs.
Improved design of cheat sheets at https://blog.kowalczyk.info/cheatsheets/. Inspired by https://tiddlywiki.com/
Improved auto-generation of Table Of Contents. ToC is based on header structure of markdown file. Used to only support a limited h2 / h3 headers but now supports h1 ⇒ h4.
Since I'm using my own markdown parser https://github.com/gomarkdown/markdown, I did some cleanups there as well.
Fixed a bug in SumatraPDF. Introduced during refactoring. Refactorings are dangerous. And so are liasons.