Fix path clipping
PEP8
Example of embedding a figure into a Tk canvas
Merge pull request #3485 from jkseppan/reduce-xobjects

ENH : Reduce the use of XObjects in pdf backend
Merge remote-tracking branch 'pipping/master'

Conflicts:
	examples/api/scatter_piecharts.py

White space induced conflicts

Conflicts:
	examples/api/scatter_piecharts.py
Merge pull request #3298 form mbdoom/arc-bug

BUG : Wedge not honouring specified angular range

Fixed minor PEP8 as part of merge
Merge pull request #1751 from mdboom/path-clipping

BUG : Polygon is corrupted with SVG backend in a certain condition
remove _orig_color which is duplicate of _rgb
DOC : added google tarcking code
Merge pull request #3686 from tacaswell/tracking

DOC : added google tarcking code
Fix drawing of markers with no stroke
Improve marker_edge test for this case
Remove the check on path length over 18980 in Cairo backend
BUG : update pyplot
Merge pull request #3695 from tacaswell/v1.4.2_proposal

BUG : update pyplot
Backport of 48573d7 to 1.4.x branch
DOC : updated github stats
DOC : added google tarcking code
BLD : add more paths for darwin

 from mdboom, committed by tacaswell
REL : v1.4.2