Prepare release (#2434)

* prepare release

* fix long line

Author: aloctavodia

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Change Log
 
-## Unreleased
+## v0.21.0 (2025 Mar 06)
 
 ### New features
 
@@ -13,6 +13,10 @@
 
 ### Documentation
 - Add example of ECDF comparison plot to gallery ([2178](https://github.com/arviz-devs/arviz/pull/2178))
+- Change Twitter to X, including the icon ([2418](https://github.com/arviz-devs/arviz/pull/2418))
+- Update Bokeh link in Installation.rst ([2425](https://github.com/arviz-devs/arviz/pull/2425))
+- Add missing periods to the ArviZ community page ([2426](https://github.com/arviz-devs/arviz/pull/2426))
+- Fix missing docstring ([2430](https://github.com/arviz-devs/arviz/pull/2430))
 
 ## v0.20.0 (2024 Sep 28)
 

arviz/__init__.py

@@ -1,6 +1,6 @@
 # pylint: disable=wildcard-import,invalid-name,wrong-import-position
 """ArviZ is a library for exploratory analysis of Bayesian models."""
-__version__ = "0.20.0"
+__version__ = "0.21.0"
 
 import logging
 import os

arviz/utils.py

@@ -735,7 +735,8 @@ class Dask:
     dask_flag = False
     """bool: Enables Dask parallelization when set to True. Defaults to False."""
     dask_kwargs = None
-    """dict: Additional keyword arguments for Dask configuration. Defaults to an empty dictionary."""
+    """dict: Additional keyword arguments for Dask configuration.
+    Defaults to an empty dictionary."""
 
     @classmethod
     def enable_dask(cls, dask_kwargs=None):