Update CHANGELOG.md 2.1.0

CHANGELOG.md

@@ -3,6 +3,17 @@
 All notable changes to this project is documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [2.1.0]
+
+### Added
+- Allow users to specify the precision level for target and ambient temperatures, introducing variables `targetTemperaturePrecision` and `ambientTemperaturePrecision`. This enhancement offers greater control over temperature display precision.
+- Added a class to the `lblPowerCircle` element to allow users to hide the power circle via custom CSS, providing more flexibility in module appearance.
+
+### Deprecated
+- Deprecated `roundTargetTemperature` and `roundAmbientTemperature` options in favor of the new precision variables.
+
+These updates focus on enhancing customization and precision in temperature displays, responding to user feedback and requests.
+
 ## [2.0.0]
 
 This release bring some breaking change. Here is a small list of noticable changes: