Update release notes

Signed-off-by: Sahas Subramanian <[email protected]>

Author: shsms

RELEASE_NOTES.md

@@ -6,10 +6,12 @@ This release adds support for retrieving microgrid electrical component connecti
 
 ## Upgrading
 
-No migration required. This is a backward-compatible feature addition.
+- The `get_microgrid` and `list_microgrid_electrical_components` methods now expect an argument of type `MicrogridId`, instead of an `int`.
 
 ## New Features
 
+- This exposes the abstract `Battery`, `EvCharger` and `Inverter` types.
+
 ### Component Connections API
 
 * **New `ComponentConnection` class**: Introduced to represent connections between electrical components in a microgrid
@@ -18,4 +20,4 @@ No migration required. This is a backward-compatible feature addition.
 
 ## Bug Fixes
 
-<!-- No bug fixes in this release -->
+<!-- No bug fixes in this release -->