Remove no-longer-necessary KnownFail for python 3.2.
Add ability to use libpng-config to get linker flags
copy FontProperty objects to solve bug #3327
test for issue #3327
Added legend.framealpha to rcParams, as alluded to by axes.legend docstring
Added legend.framealpha line to template rcparam file
whats_new statement added
Move widget.{get,set}_active to AxisWidget.

The method was previously defined only for RectangleSelectors (#3375).

Also, an redundant line was removed (RectangleSelectors are already set
active on __init__ by the superclass).
Update background on widget.set_active(True).

Because selectors must update their background on set_active(True),
widget.active was made a property for backwards compatibility.
Updated whats_new.rst.

Because _Selector is a private class there are no references to the
actual getter and setter in the rst file.
Minor fixes according to Github discussion.
_SelectorWidget overrides the active property.

... so it should dynamically retrieve the set_active method.
Merge pull request #3394 from tacaswell/input_type_faq

DOC : add note about np.matrix and pandas objects
Merge pull request #3397 from tacaswell/install_guide_tweaks

Install guide tweaks
Merge pull request #3399 from jenshnielsen/cherrypick-v140

Cherrypick doc changes to v1.4.x
enlarge on windows build instructions slightly
fix '-'
Merge pull request #3401 from jbmohler/winbuild_redir

Doc : enlarge on windows build instructions slightly
REL : version bump for release
DOC : updated user stats