Start to update docs for spectral/Spectral change
change spectral to nipy_spectral, leave spectral as alias, update docs
align nipy_spectral_data, double backquotes
Add dateutil kwargs to csv2rec

Fixes ambiguous date problems between US/UK date conventions.
Make conf.py work with py3
Make gen_rst behave with py3
Make plot_directive py3 friendly
Make make.py build docs under python 3
Make call to raise py3 compatible
Fix py2/3 unicode differences
Simple 2to3 on gen_gallery.py
Make md5 take byte as argument, not string
Make loc come after fontdict in set_title. Closes #1759
axes3d's set_title sould return the Text object
Also needed to swap the arguments in docstring
Also need to fix the title() docstring in pyplot.py
Fix #1799: path collections with NaNs in the path cause exceptions in vector backends.
Merge pull request #1799 from mdboom/issue1799

Corrupt/invalid PDF and EPS files when saving a logscaled plot made with negative values
draw paths in stretches of 100 points to avoid the severe decrease in performance that may occur if long paths are draw
bbox_inches=tight support for *all* figure artists.