1. [ ] `rg TODO src/`
2. [ ] Clean up git blob:
    `3fe94d749f62112dda1ff5f3fe68606b0237fe6f (c9e85c700dfd5ee8dcef9a6380731d75d59ee907:costas_10x10.txt)` 
    You can do this with `git filter-branch` (https://www.deployhq.com/git/faqs/removing-large-files-from-git-history).