Improve empty collection check in add_collection.
Add test for add_collection
add default savefig directory
replace tabs with spaces
explicitly missing key or empty str signals to use cwd
PEP8
Implement savefig.directory for tk gui
fix comment in gtk FileChooserDialog: does *not* remember last selected file/directory
Implement savefig.directory for gtk gui
Implement savefig.directory for gtk3 gui
Update CHANGELOG with savefig.directory feature
Split line
Update what's new with savefig.directory feature
Use unicode instead of str
add @cleanup to test_add_collection
Typo in "Annotation" docstring.

The "axes fraction" description in the table of values for 'xycoords'
and 'textcoords' had a typo, suggesting that (0,1) represents the lower
left corner of the figure when it is actually (0,0).

I also removed what looked like an extraneous typo in the description of
the "figure fraction" property.

The corresponding table in the users guide was similarly updated.
Update lib/matplotlib/tests/test_axes.py
fix name missmatch in filetypes.rgba and print_rgb method
Merge pull request #1750 from decster/master

Name missmatch in filetypes.rgba and print_rgb of backend_bases.py
Merge pull request #1748 from pbugnion/annotate_docs

Typo in "Annotation" docstring.