Merge pull request #1505 from tacaswell/issue1504

NF - Transparency for markers.
Merge pull request #1651 from mdboom/webagg/pylab_compatibility

WebAgg: pylab compatibility
PEP8 fix
Explain that matplotlib must be built before the HTML documentation

Attempting to generate the HTML documentation right after cloning the
repository results in a cryptic error message as one of the required
files, mpl-data/matplotlibrc, is created when matplotlib is built. It
seems that other people have come across this problem in the past [1],
so mentioning it here might be of help to newcomers.

[1] http://sourceforge.net/mailarchive/message.php?msg_id=21478615
Address PEP8 compliancy issue
Merge pull request #1654 from tacaswell/collection_zorder_kwarg

added explicit 'zorder' kwarg to `Colection` and `LineCollection`.
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)
Add numpydoc to the list of extensions.
Added the autosummary extension module for sphinx
ENH Made the docutils tables generated with the numpydoc in the documentation a little prettier
PEP8 fixes on the rcsetup module
FIX in the scatter method of axes, edgecolors needs to be fetch from the kwargs
Merge pull request #1568 from NelleV/remove_deprecated_stuff

removed deprecated methods from the axes module.
Fix USE_FONTCONFIG == True mode.
Merge pull request #1650 from mdboom/png/fix_file_like_py3

_png.read_png crashes on Python 3 with urllib.request object
Merge pull request #1641 from NelleV/rcparams

PEP8 fixes on the rcsetup module
Merge remote-tracking branch 'upstream/v1.2.x'
Merge pull request #1611 from segasai/master

change handling of legend labels which are None