added release notes for the reverse_inplace function

releasenotes/notes/added-reverse-inplace-for-digraph-c59759a1d54edb1a.yaml

@@ -0,0 +1,17 @@
+---
+features:
+  - |
+    The :class:`~rustworkx.PyDiGraph` class has a new method
+       :meth:`~rustworkx.PyDiGraph.reverse_inplace``. This function reverses the edges in the graph, inplace.
+    For example:
+    import rustworkx as rx
+    
+    graph = rx.PyDiGraph()
+    graph.add_nodes_from(range(4))
+    graph.add_edge(0, 1, 3)
+    graph.add_edge(1, 2, 5)
+    graph.add_edge(2, 3, 2)
+    
+    graph.reverse_inplace()
+    
+    assert graph.edge_list() == [(3, 2), (2, 1), (1, 0)]