matplotlib Code

Remove unmasked_index_ranges from lines.py; it is still in cbook.py

Add docstring.py; I forgot to add it when committing the Coombs patch

Small changes to bar kwarg handling in response to 1200213

pyplot tracks current image at the figure and axes level;
fixes ticket 1656374

get_sample_data improvements: remove old files from subdirectories and
not only the top-level directory; try to handle the disconnected use case;
use the perhaps more stable svnroot URL instead of the viewvc one

Add CHANGELOG entry for Coombs docstring work.

Use decorators to manipulate docstrings; patch by Jason Coombs
Tracker 2835685, file DocstringOptimizedTypeErrorRev5.patch

added transformations tut, did some reorg

some doc reorg

add support for image filtering in agg backend