DOC improves documentation on the pyplot module and the bar method
Simplified the creation of a WebAgg html canvas.
backend_pgf: clip paths within the backend (fixes #1857)
Support for multiple figres on the same page.
Finished WebAgg JS objectification & generalisations.
Fixed typo for WebAgg directory locations.
Clarify documentation for FuncAnimation
more FuncAnimation documentation tweaking
Fix inkscape install errors on Travis
Restored inkscape installing on travis-ci.
Merge pull request #1890 from pelson/travis_inkscape

Restored inkscape installing on travis-ci.
Fix gen_rst.py to use the correct encoding even on Python 2.
Fix #1894: Composite images do not have a transparent background
Merge pull request #1887 from alito/master

Clarify documentation for FuncAnimation
Merge pull request #1894 from mdboom/image/composite_background

Fixes background coloring of multiple images on the same axes.
Merge remote-tracking branch 'upstream/v1.2.x'
Merge pull request #1878 from pelson/webagg_changes

Webagg changes
Added a find_all method to the RcParams dictionary.
Updated RcParams.find_all to use re. Added a str and repr for RcParams & added some tests.
Switching b and c in _transformation_converter to fix issue #1886