- Fix bug: navigation shortcuts didn't work due to collision with indent
  shortcut. Now explicitly unbind indent shortcuts so ours can be registered.
- Make use of richer stringmatch against full path; also fixes bugs where
  matched text often wasn't highlighted in results (this bumps up min ver
  just a bit)
- Fix deprecation warning in Sprint 23+
- Add package.json & update README (new installation steps, min ver change,
  etc.)