### Changed

- This forge's release line runs `0.4.1 → 0.6.1`: versions 0.5.0 and 0.6.0
  arrived here by merge from the read-only upstream and were never released
  on this forge (#220).

- The `## 0.6.0` section this changelog carries is upstream's — its entries
  describe upstream's work under upstream's issue numbers. The forge port's
  own work ships first in 0.6.1 (#220).