added 'pan' to the example
When I was playing with this example I found myself wanting to pan after zooming in.
I thought this might be a sane default to add.  Granted others could add that in later but I thought it would be nice to have right off the bat.
@@ -11,7 +11,7 @@ y = np.random.standard_normal(n)
bins = hexbin(x, y, 0.1)
-p = figure(title="Manual hex bin for 50000 points", tools="wheel_zoom,reset",
+p = figure(title="Manual hex bin for 50000 points", tools="wheel_zoom,pan,reset",
match_aspect=True, background_fill_color='#440154')
p.grid.visible = False
