Python user guide does not mention that Data and Annotations are deprecated

[jacklovell]

The guide at https://plot.ly/python/user-guide/ describes the graph_objs.Data and graph_objs.Annotations objects, but fails to mention that these are deprecated as of Plotly.py 3.x. Could the documentation please be updated so that new users are using the recommended best practices (using lists/tuples instead of these deprecated objects)?