Clear release notes (#1069)

Author: llucax

RELEASE_NOTES.md

@@ -2,23 +2,16 @@
 
 ## Summary
 
-This release mainly introduces a new feature that allows fallback components to be used in generated formulas, but it also fixes a few bugs and gets rid of `betterproto`/`grpclib` and goes back to Google's implementation.
+<!-- Here goes a general summary of what this release is about -->
 
 ## Upgrading
 
-- The `frequenz-client-microgrid` dependency was bumped to `0.5.0`. This can cause dependency issues if you are using other API clients and the `frequenz-client-base` dependencies don't match.
+<!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->
 
 ## New Features
 
-- Fallback components are used in generated formulas. If primary components is unavailable, formula will generate metric from fallback components. Fallback formulas are implemented for:
-  - PVPowerFormula
-  - ProducerPowerFormula
-  - BatteryPowerFormula
-  - ConsumerPowerFormula
-  - GridPowerFormula
+<!-- Here goes the main new features and examples or instructions on how to use them -->
 
 ## Bug Fixes
 
-- Allow setting `api_power_request_timeout` in `microgrid.initialize()`.
-
-- Fix an issue where in grid meters could be identified as {pv/ev/battery/chp} meters in some component graph configurations.
+<!-- Here goes notable bug fixes that are worth a special mention or explanation -->