docs: v0.21.0 + doc updates

Author: kayjan

CHANGELOG.md

@@ -6,7 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [0.21.0] - TBD
+## [0.21.0] - 2024-08-26
 ### Added:
 - Tree Plot: Plot tree using matplotlib library, added matplotlib as optional dependency.
 - BaseNode: Add plot method.

bigtree/__init__.py

@@ -1,4 +1,4 @@
-__version__ = "0.20.1"
+__version__ = "0.21.0"
 
 from bigtree.binarytree.construct import list_to_binarytree
 from bigtree.dag.construct import dataframe_to_dag, dict_to_dag, list_to_dag

docs/gettingstarted/demo/tree.md

@@ -524,6 +524,7 @@ Below is the table of operations available to `BaseNode` and `Node` classes.
 | Get attribute                                   | `root.get_attr("description")`                             | 'root-tag'                                 |
 | Copy tree                                       | `root.copy()`                                              | None                                       |
 | Sort children                                   | `root.sort(key=lambda node: node.node_name, reverse=True)` | None                                       |
+| Plot tree                                       | `root.plot("-ok")`                                         | plt.Figure()                               |
 
 ## Traverse Tree