Update CHANGELOG

Author: bouwew

CHANGELOG.md

@@ -2,8 +2,8 @@
 
 ## v0.31.5: Cooling-related fix/improvements
 
-- Fix cooling-related bug in set_temperature()
-- Change setpoint_low/_high generation, only show the active setpoint and the related min/max values
+- Fix cooling-related bug in set_temperature(), raise an error when the user tries to change the not-active setpoint
+- Change setpoint_low/_high generation, show the active setpoint and the related min/max values, don't show related setpoints in the active schedule
 - Update related test-assert / fixtures
 - Improve dhw_setpoint related code