Update release notes

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

RELEASE_NOTES.md

@@ -6,7 +6,25 @@
 
 ## Upgrading
 
-<!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->
+- The SDK now depends on the `frequenz-client-microgrid` v0.18.x series.
+
+    * Check the release notes for the client [v0.18].
+    * There were a lot of changes, so it might be also worth having a quick look at the microgrid API [v0.17][api-v0.17] and [v0.18][api-v0.17] releases.
+    * Checking out the API common releases [v0.6][common-v0.6], [v0.7][common-v0.7], [v0.8][common-v0.8] might also be worthwhile, at least if you find any errors about renamed or missing types.
+    * Although many of the changes in lower layer are hidden by the SDK, there are some changes that can't be hidden away. For example the `Metric` enum had some renames, and `Component.component_id` was renamed to `Component.id`. Also, there is a new component class hierarchy.
+
+- `ComponentGraph` methods arguments were renamed to better reflect what they expect.
+
+    * The `components()` method now uses `matching_ids` and `matching_types` instead of `component_ids` and `component_categories` respectively. `matching_types` takes types inheriting from `Component` instead of categories, for example `Battery` or `BatteryInverter`.
+    * The `connections()` methods now take `matching_sources` and `matching_destinations` instead of `start` and `end` respectively. This is to match the new names in `ComponentConnection`.
+    * All arguments for both methods can now receiver arbitrary iterables instead of `set`s, and can also accept a single value.
+
+[v0.18]: https://github.com/frequenz-floss/frequenz-client-microgrid-python/releases/tag/v0.18.0
+[api-v0.17]: https://github.com/frequenz-floss/frequenz-api-microgrid/releases/tag/v0.17.0
+[api-v0.18]: https://github.com/frequenz-floss/frequenz-api-microgrid/releases/tag/v0.18.0
+[common-v0.6]: https://github.com/frequenz-floss/frequenz-api-common/releases/tag/v0.6.0
+[common-v0.7]: https://github.com/frequenz-floss/frequenz-api-common/releases/tag/v0.7.0
+[common-v0.8]: https://github.com/frequenz-floss/frequenz-api-common/releases/tag/v0.8.0
 
 ## New Features