added unit test for rcParam['legend.scatterpoints']
added rcParam['legend.scatterpoints']
tweaked comments to no longer be a TODO
PEP8 fix
Merge pull request #1634 from tacaswell/scatterpoint_rcParam

add scatterpoints to  rcParam
Fix shifted ylabels (#1571)

Force 'anchor' rotation mode when setting the label position,
and use the appropriate alignment for the Y-label position.
Merge pull request #1589 from dopplershift/fix_ylabels

Fix shifted ylabels (Issue #1571)