DOC: Rewrite for Styler user guide with new features and other high-level changes.

doc/source/ecosystem.rst

@@ -98,7 +98,8 @@ which can be used for a wide variety of time series data mining tasks.
 Visualization
 -------------
 
-While :ref:`pandas has built-in support for data visualization with matplotlib <visualization>`,
+`Pandas has its own Styler class for table visualization <user_guide/style.ipynb>`_, and while
+:ref:`pandas also has built-in support for data visualization through charts with matplotlib <visualization>`,
 there are a number of other pandas-compatible libraries.
 
 `Altair <https://altair-viz.github.io/>`__

doc/source/user_guide/index.rst

@@ -38,12 +38,12 @@ Further information on any specific method can be obtained in the
     integer_na
     boolean
     visualization
+    style
     computation
     groupby
     window
     timeseries
     timedeltas
-    style
     options
     enhancingperf
     scale