Clear release notes (#177)

Author: llucax

RELEASE_NOTES.md

@@ -2,31 +2,16 @@
 
 ## Summary
 
-This release removes the `timezonefinder` dependency to significantly reduce package size by 66M+ and enable ARM platform support.
-
-> [!WARNING]
->  This is a **breaking change** shipped in a patch release because this feature has no known users.
+<!-- Here goes a general summary of what this release is about -->
 
 ## Upgrading
 
-The `Location.timezone` field no longer performs automatic timezone lookup from latitude/longitude coordinates.
+<!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->
 
-```python
-# Automatic timezone lookup (no longer works)
-location = Location(latitude=52.52, longitude=13.405)
-print(location.timezone)  # Previously: ZoneInfo('Europe/Berlin'), now None
-```
+## New Features
 
-If you need timezone lookup from coordinates, install [`timezonefinder`](https://pypi.org/project/timezonefinder/) separately and implement manual lookup:
+<!-- Here goes the main new features and examples or instructions on how to use them -->
 
-```python
-# Install: pip install timezonefinder
-from timezonefinder import TimezoneFinder
-from zoneinfo import ZoneInfo
-from frequenz.client.microgrid import Location
+## Bug Fixes
 
-tf = TimezoneFinder()
-tz_name = tf.timezone_at(lat=52.52, lng=13.405)
-timezone = ZoneInfo(tz_name) if tz_name else None
-location = Location(latitude=52.52, longitude=13.405, timezone=timezone)
-```
+<!-- Here goes notable bug fixes that are worth a special mention or explanation -->