update changelog, bump chart

CHANGELOG.md

@@ -4,6 +4,20 @@ All notable changes to econet-exporter are documented here. The format is
 based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this
 project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v0.3.0] - 2026-07-05
+
+### Changed
+
+* Replaced the third-party `kevinburke/rheemcloud-go` dependency and its MQTT
+  coupling with an in-repo `econetclient` REST poller that talks directly to
+  the Rheem/EcoNet cloud REST API. Device state (including `@RUNNING`, `@MODE`,
+  and `@STATUS`) is sourced from the REST `getUserDataForApp` payload, so no
+  MQTT connection is required.
+
+### Removed
+
+* `rheemcloud` package and its `go.mod`/`go.sum` entries.
+
 ## [v0.2.0] - 2026-07-05
 
 ### Added

helm/Chart.yaml

@@ -15,13 +15,13 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.1.5
+version: 0.1.6
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "v0.2.0"
+appVersion: "v0.3.0"
 
 dependencies:
   - name: hull