Reset release notes

Signed-off-by: Mathias L. Baumann <[email protected]>

Author: Marenz

RELEASE_NOTES.md

@@ -2,17 +2,16 @@
 
 ## Summary
 
-This release contains a few breaking changes that were required to enhance the
-API.
+<!-- Here goes a general summary of what this release is about -->
 
 ## Upgrading
 
-- The `Dispatch` class is now a frozen dataclass, meaning that it is immutable. Modifications can still be done using `replace`: `dispatch = replace(dispatch, start_time=new_start_time)`.
-- The `Client.update()` method now requires named parameters.
-- `Client.update()` no longer accepts changes to the `type` and `dry_run` fields.
+<!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->
 
 ## New Features
 
-- A new module `frequenz.client.dispatch.test` has been added, providing a fake Service and Client as well as a `DispatchGenerator` to generate `Dispatch` instances filled with random data.
-- The `DispatchGenerator.generate_dispatch` method now accepts a `microgrid_id` parameter to generate `Dispatch` instances with a specific microgrid ID.
-- The `Client.create()` method now returns the newly created `Dispatch` object.
+<!-- Here goes the main new features and examples or instructions on how to use them -->
+
+## Bug Fixes
+
+<!-- Here goes notable bug fixes that are worth a special mention or explanation -->