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+### 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).
+
+- No `0.6.0` tag exists here, by decision rather than omission: tagging it
+  would publish notes describing work this forge did not do while omitting
+  every issue it did (#220, #219).