- Document ilovezfs as the official lead maintainer of
 Homebrew/homebrew-core. This is a role he's been doing unofficially
 (and brilliantly) for a while and explicit documentation of power
 structures makes it easier for non-Homebrew-maintainers to understand.
- Document the contents of some of Homebrew's subdirectories for people
  clicking around in the GitHub UI looking to contribute.
- Remove update bug mention from README. Enough time has passed that we
  can remove this disappointment.