Three entities renamed, for everyone: "Error Code", "Error type" and "Thermostat ON/OFF" existed twice in most definitions, once for the outdoor unit and once for the indoor unit, under one name, so they hid each other (the JSON message carried the key twice, Home Assistant made one entity of the pair). They are now told apart, "O/U Error Code" / "I/U Error Code" and so on, with new entity ids (sensor.espaltherma_ou_error_code, sensor.espaltherma_iu_error_code…); the old entities keep their last value until removed. Thanks @hidminds (#617, #619).
Targets: a "Restore the unit's curve" button on the cards, a button entity in Home Assistant and restore on the target's MQTT topic put back the curve found before the first write. Asked by the first leaving water testers, @rogervdh and @NicoLouis-be.
Fixes by @hidminds: the value selection no longer resets after a power cut of the heat pump, when the sleeping outdoor unit answered zeros and passed for another heat pump (#611); deselected values are removed from Home Assistant (#616); the ECH2O D definitions' water temperatures ("[HPSU] Tv inflow Temp"…) show on the drawing and are in the recommended selection (#613).
Nederlands: the web page and the installer in Dutch, by @Zjoske65 (#610).
Home Assistant card v1.0.13: the ECH2O water temperatures, one error tile per unit when both are known, Dutch.