Make arrow docstring mention data transform
Fixes #1316.  Default to `None` for rasterization_zorder.
Merge pull request #1316 from mdboom/zorder-fix

very high negative zorder breaks vector graphic rendering
Update Mac build process. Fixes #751

Previously, make.osx installed necessary dependencies. Recent versions
of OS X already include all those dependencies.

The setupext.py basedir list has been updated to include the default
directory to which macports installs libraries.
Work around a huge memory leak in PySide on Python 3
backend_pgf: improve handling of temporary directories
backend_pgf: implement subset of WeakSet for supporting py2.6
backend_pgf: track remaining tmpdirs and try to delete them atexit
backend_pgf: add a remark concerning #1324 to the doc, some cleanup
Merge pull request #1286 from pwuertz/pgf-tmpdir-fix

backend_pgf: improve handling of temporary directories
Make build process set PKG_CONFIG_PATH variable

If the platform has pkg-config then add python's .pc files to the end of
the pkg-config search path. If there was a problem setting it or
pkg-config doesn't exist then do nothing.

It appears that the environment variable change only exists within the
build process.
Make path handling use os.path.join
Add a comment to revert PR #1323 in the future
Remove unused buildbot files. We use Travis now
Moved test TODO and remove test dir
plt.subplots: also set the visibility of the offset text to false when the corresponding
tick labels visibilities are set to false
Tiny (but serious) bugfixes in image.py

zeros -> numpy.zeros (otherwise undefined)
FigureCanvasPDF -> FigureCanvasPdf (otherwise undefined)

FWIW, these were both spotted with pylint. I can add a Pylint error hook
to Travis-CI later on if there's interest.

Signed-off-by: Nick Semenkovich <semenko@alum.mit.edu>
Merge pull request #1330 from semenko/fix-image-errors

Tiny (but serious) bugfixes in image.py
fix drawing error of fancyarrow of simple style when two points are too close. This addresses #566. Initial patch submitted by Rolf Barinka.
Merge pull request #1340 from leejjoon/fix-simple-arrow2

fix drawing error of fancyarrow of simple style (v1.2.x)