MEP10 - refactored hlines and vlines documentation
Modified hline and vline examples to have only one file and linked them to the documentation
DOC mentions kwargs in vlines and hlines
DOC didn't render properly
Merge pull request #1795 from NelleV/MEP10_hvlines

MEP10 - refactored hlines and vlines documentation
PEP8 fixes on the markers module
MEP10 - documentation improvements on the markers module
DOC improvements on the markers module
DOC axes now refers to the Markers module instead of concatenating docstrings
Merge pull request #1803 from NelleV/pep8_markers

Markers module: PEP8 fixes and MEP10 documentation fixes
BF - correct return type for Axes.get_title
Merge pull request #1832 from ajdawson/fix-get-title

BF - correct return type for Axes.get_title
finance.fetch_historical_yahoo: Create directories leading up to cachename.

Previously, if cachename was specified, it would create the directories to
cachedir instead, resulting in OSError if the directories leading up to
cachename were not specified.
finance: Use context manager to close files.

Previously, the urllib object opened in fetch_historical_yahoo was not
explicitly closed.
Merge pull request #1834 from mgiuca-google/finance-cachename

finance: Fixed making directories for explicit cachename
MEP10 - documentation improvements on many common plots: scatter plots, imshow, matshow etc
DOC improvements on scatter plot
Merge pull request #1827 from NelleV/MEP10_axes_common_plots

MEP10 - documentation improvements on many common plots: scatter plots, ...
backend_ps: Do not write to a temporary file unless using an external distiller.

If ps.usedistiller is omitted, writes directly to the output file, instead of
creating a temporary file and subsequently copying it to the output.

This is more efficient, and also works on restricted platforms such as Google
App Engine, which are unable to provide a writable temporary file system.
Merge pull request #1826 from mgiuca-google/backend_ps-no-temp-file

backend_ps: Do not write to a temporary file unless using an external distiller