Reduce coupling between _tkagg and _backend_agg modules
backend_pgf: \pgftext now requires \color inside argument (fix #3779)
Merge pull request #3778 from mdboom/tkagg-simplify

MNT : Reduce coupling between _tkagg and _backend_agg modules
backend_pgf: Check text color in tests
Fix compiler warning
Upgrade Agg to SVN r103
Workaround for blending bug in new Agg.
Make cell_block_limit non-hard-coded
Move typedefs

Conflicts:
	src/_tkagg.cpp
Move Agg directory

Conflicts:
	setupext.py
Use Agg workarounds in image module as well
Update tests to more accurate results
Fix directory
Add missing file
Merge pull request #3780 from pwuertz/fix_3779

BUG : backend_pgf: \pgftext now requires \color inside argument (fix #3779) [backport to 1.4.x]
Merge pull request #3781 from mdboom/compiler-warning

MNT : Fix compiler warning
Merge pull request #3777 from mdboom/upgrade-agg

MNT : Upgrade agg to SVN version
Update fonts_demo

Print all text within figure and remove missing cursive text
Improve fonts_demo_kw
Enumerate examples in font demo