Merge branch 'master' into fix-doc-string

Author: LiamConnors

Diff for: README.md

@@ -31,6 +31,13 @@
     </tr>
 </table>
 
+<div align="center">
+  <a href="https://dash.plotly.com/project-maintenance">
+    <img src="https://dash.plotly.com/assets/images/maintained-by-plotly.png" width="400px" alt="Maintained by Plotly">
+  </a>
+</div>
+
+
 ## Quickstart
 
 `pip install plotly==5.22.0`

Diff for: packages/python/plotly/plotly/express/_doc.py

@@ -510,7 +510,10 @@
         "boolean (default `False`)",
         "If `True`, an extra line segment is drawn between the first and last point.",
     ],
-    line_shape=["str (default `'linear'`)", "One of `'linear'` or `'spline'`."],
+    line_shape=[
+        "str (default `'linear'`)",
+        "One of `'linear'`, `'spline'`, `'hv'`, `'vh'`, `'hvh'`, or `'vhv'`",
+    ],
     fitbounds=["str (default `False`).", "One of `False`, `locations` or `geojson`."],
     basemap_visible=["bool", "Force the basemap visibility."],
     scope=[