In _modules/week-*.md, lab and homework titles should be bolded only after release.
Treat a lab or homework as released when its schedule event has the released assignment link, usually problems:, or when the user explicitly says it has been released.
Released lab/homework titles should use <b>...</b> in title:. Unreleased lab/homework titles should be plain text with no <b>, <strong>, or Markdown bold.
Homework events use type: hw; do not change them to type: homework.