Bug data format

- Browser
  - cr: Chrome
  - wk: Safari
  - ff: Firefox
  - ie: IE11
  - edge: Microsoft Edge
  - When linking, use bugzil.la, wkbug.com, crbug.com
- Platform
- Project
- Description
- Upstream bug(s) (incl. w3.org/Bugs, csswg-test, web-platform-tests)
- Downstream bug(s)
- Links
  - MDN
  - caniuse
  - other
