PEP8: Fix recently introuced pep8 violations
added return doc-string
pep8 clean up
BUG: fix non normalized vectors in gen. eig solver

The eigenvectors returned by the generalized eigenvalue solver were not
normalized. This seems to be an error in the lapack function. This
commit adds a fix for scipy and a unit-test
TST Use same C runtime library as Python executable
Merge pull request #3065 from cgohlke/patch-1

TST: integrate: Use same C runtime library as Python executable
Merge pull request #3055 from kain88-de/fix_gen_eig_solver

BUG: linalg: fix non normalized vectors in gen. eig solver
BUG: ndimage: return signed dtype from label by default

Change default return dtype from ndimage.label back to signed integer,
as find_objects and some other functions don't support unsigned intp.
Merge pull request #3062 from tacaswell/maximum_filter1d_doc

DOC: ndimage: maximum_filter1d return value
Merge pull request #3070 from pv/label-out-dtype

BUG: ndimage: return signed dtype from label by default
BUG: ndimage: use only normalized type_num in comparisons

Numpy type_num cannot be used in comparisons, since some of the values
are equivalent, depending on the platform.
Merge pull request #3071 from pv/ndimage-typenum

BUG: ndimage: use only normalized type_num in comparisons
Merge pull request #3052 from timleslie/master

PEP-8 conformance improvements
MAINT: fix coveralls.io reports.

Was broken by change to runtests.py in c3d68e816.
The .coverage file should be in the root dir of the repo for coveralls
to pick it up.
Adds failing test for nominal arff reading

The arff io reader fails to load arff files containing
a single nominal value of only 1 character.  Adds a
test demonstrating the failure in this case.
Fixes failing test of arff reader

Alteres the regex for parsing nominal values in
arff files so that single character nominal
values can now be successfully parsed.
Fixes arff io test name
DOC: add 0.13.1 release notes.

Conflicts:
	doc/source/release.rst
Merge pull request #3073 from ghl3/arff_nominal_fix

Arff reader with nominal value of 1 character
BUG: fix range keyword for stats.binned_statistic.  Closes gh-3063.