Fix mkdocs navigation bar API link (#642)

The `section-index` plugin has a bug[^1] that causes the navigation bar
to display a wrong text for the **API Reference** link. There is a fix
for it, but `mkdocs-material` already provides the feature natively[^2],
so we can just use it instead, as it is much less likely to have issues.

[^1]: oprypin/mkdocs-section-index#18
[^2]:
https://squidfunk.github.io/mkdocs-material/setup/setting-up-navigation/#section-index-pages
Fixes #640.

Author: llucax

RELEASE_NOTES.md

@@ -1,129 +1,5 @@
 # Frequenz Python SDK Release Notes
 
-## Summary
-
-This release replaces the `@actor` decorator with a new `Actor` class.
-
-## Upgrading
-
-
-- The `frequenz.sdk.power` package contained the power distribution algorithm, which is for internal use in the sdk, and is no longer part of the public API.
-
-- `PowerDistributingActor`'s result type `OutOfBound` has been renamed to `OutOfBounds`, and its member variable `bound` has been renamed to `bounds`.
-
-- The `@actor` decorator was replaced by the new `Actor` class. The main differences between the new class and the old decorator are:
-
-  * It doesn't start automatically, `start()` needs to be called to start an actor (using the `frequenz.sdk.actor.run()` function is recommended).
-  * The method to implement the main logic was renamed from `run()` to `_run()`, as it is not intended to be run externally.
-  * Actors can have an optional `name` (useful for debugging/logging purposes).
-  * The actor will only be restarted if an unhandled `Exception` is raised by `_run()`. It will not be restarted if the `_run()` method finishes normally. If an unhandled `BaseException` is raised instead, it will be re-raised. For normal cancellation the `_run()` method should handle `asyncio.CancelledError` if the cancellation shouldn't be propagated (this is the same as with the decorator).
-  * The `_stop()` method is public (`stop()`) and will `cancel()` and `await` for the task to finish, catching the `asyncio.CancelledError`.
-  * The `join()` method is renamed to `wait()`, but they can also be awaited directly ( `await actor`).
-  * For deterministic cleanup, actors can now be used as `async` context managers.
-
-  Most actors can be migrated following these steps:
-
-  1. Remove the decorator
-  2. Add `Actor` as a base class
-  3. Rename `run()` to `_run()`
-  4. Forward the `name` argument (optional but recommended)
-
-  For example, this old actor:
-
-  ```python
-  from frequenz.sdk.actor import actor
-
-  @actor
-  class TheActor:
-      def __init__(self, actor_args) -> None:
-          # init code
-
-      def run(self) -> None:
-          # run code
-  ```
-
-  Can be migrated as:
-
-  ```python
-  import asyncio
-  from frequenz.sdk.actor import Actor
-
-  class TheActor(Actor):
-      def __init__(self, actor_args,
-          *,
-          name: str | None = None,
-      ) -> None:
-          super().__init__(name=name)
-          # init code
-
-      def _run(self) -> None:
-          # run code
-  ```
-
-  Then you can instantiate all your actors first and then run them using:
-
-  ```python
-  from frequenz.sdk.actor import run
-  # Init code
-  actor = TheActor()
-  other_actor = OtherActor()
-  # more setup
-  await run(actor, other_actor)  # Start and await for all the actors
-  ```
-
-- The `MovingWindow` is now a `BackgroundService`, so it needs to be started manually with `window.start()`. It is recommended to use it as an `async` context manager if possible though:
-
-    ```python
-    async with MovingWindow(...) as window:
-        # The moving windows is started here
-        use(window)
-    # The moving window is stopped here
-    ```
-
-- The base actors (`ConfigManagingActor`, `ComponentMetricsResamplingActor`, `DataSourcingActor`, `PowerDistributingActor`) now inherit from the new `Actor` class, if you are using them directly, you need to start them manually with `actor.start()` and you might need to do some other adjustments.
-
-- The `BatteryPool.power_distribution_results` method has been enhanced to provide power distribution results in the form of `Power` objects, replacing the previous use of `float` values.
-
-- In the `Request` class:
-  * The attribute `request_timeout_sec` has been updated and is now named `request_timeout` and it is represented by a `timedelta` object rather than a `float`.
-  * The attribute `power` is now presented as a `Power` object, as opposed to a `float`.
-
-- Within the `EVChargerPool.set_bounds` method, the parameter `max_amps` has been redefined as `max_current`, and it is now represented using a `Current` object instead of a `float`.
-
-- The argument `nones_are_zeros` in `FormulaEngine` and related classes and methods is now a keyword-only argument.
-
-## New Features
-
-- Added `DFS` to the component graph
-
-- `BackgroundService`: This new abstract base class can be used to write other classes that runs one or more tasks in the background. It provides a consistent API to start and stop these services and also takes care of the handling of the background tasks. It can also work as an `async` context manager, giving the service a deterministic lifetime and guaranteed cleanup.
-
-  All classes spawning tasks that are expected to run for an indeterminate amount of time are likely good candidates to use this as a base class.
-
-- `Actor`: This new class inherits from `BackgroundService` and it replaces the `@actor` decorator.
-
-- Newly added `min` and `max` functions for Formulas. They can be used as follows:
-
-    ```python
-    formula1.min(formula2)
-    ```
-
 ## Bug Fixes
 
-- Fixes a bug in the ring buffer updating the end timestamp of gaps when they are outdated.
-
-- Properly handles PV configurations with no or only some meters before the PV component.
-
-  So far we only had configurations like this: `Meter -> Inverter -> PV`. However the scenario with `Inverter -> PV` is also possible and now handled correctly.
-
-- Fix `consumer_power()` not working certain configurations.
-
-  In microgrids without consumers and no main meter, the formula would never return any values.
-
-- Fix `pv_power` not working in setups with 2 grid meters by using a new reliable function to search for components in the components graph
-
-- Fix `consumer_power` and `producer_power` similar to `pv_power`
-
-- Zero value requests received by the `PowerDistributingActor` will now always be accepted, even when there are non-zero exclusion bounds.
-
-- Hold on to a reference to all streaming tasks in the microgrid API client, so they don't get garbage collected.
+- Fix the **API Reference** link in the documentation website navigation bar.

mkdocs.yml

@@ -24,6 +24,7 @@ theme:
   features:
     - content.code.annotate
     - content.code.copy
+    - navigation.indexes
     - navigation.instant
     - navigation.tabs
     - navigation.top
@@ -115,7 +116,6 @@ plugins:
             - https://typing-extensions.readthedocs.io/en/stable/objects.inv
             - https://watchfiles.helpmanual.io/objects.inv
   - search
-  - section-index
 
 # Preview controls
 watch: