matplotlib Code

fix typos

Fix callbacks accumulating bug by using a ScaledTranslation rather
than a callback on dpi change.
Fix ScaledTranslation.__repr__
(Thanks Stan West for tracking down and fixing these issues).

a further hist() update

Fix polygon closing and provide option not to close (used by hist(histtype="step"))

Fix bug in recent PolyCollection sizing change.

added draft outline

added api histogram demo which comments on the new bins return value

Add newline to end of file.

Close polygons.

Add some CSS so that there are lines above classes and methods in the
auto-generated docs.