Consider ourselves interactive if sys.flags.interactive is set.
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added failing test
slight tweak to example, as discussed in #1451 to change `plt.draw()`
-> `plt.pause(.001)` to fake animations.
BUG: correctly convert labelsize -> int

Do this by getting the size value back from the underlying text
object.
Merge pull request #2619 from tacaswell/issue_1451

slight tweak to mpl_example
Merge pull request #2618 from tacaswell/fix_issue_1172

Fix issue 1172
backend_qt4agg and qt4: remove redundant classes, unused method.  Closes #1151.
Added new-style formatter function.

Added class `StrMethodFormatter` which is identical to `FormatStrFormatter`
only for new-style ('{}'.format) formatting methods.
Merge pull request #2629 from efiring/qt4agg_remove_unneeded

backend_qt4agg: remove redundant classes.  Closes #1151.
BUGFIX: ensure that number of classes is always of type INT in Colormap
Axes.plot: remove set_default_color_cycle from the docstring

It has been removed in 2c24a7c13645fbf0c79bb102274604c3f37b70d2.
Merge pull request #2639 from bulli92/master

BUGFIX: ensure that number of classes is always of type INT in Colormap
Fix for when pyparsing isn't present

Conflicts:
	setupext.py
Merge pull request #2639 from bulli92/master

BUGFIX: ensure that number of classes is always of type INT in Colormap
pep8 fixes
Merge remote-tracking branch 'upstream/v1.3.x'

Conflicts:
	lib/matplotlib/axis.py
	lib/matplotlib/tests/test_axes.py
put in explicit field name for 2.6 compatibility.
Merge pull request #2640 from mineo/plot-docstring

Axes.plot: remove `set_default_color_cycle` from the docstring as the function has been depreciated and removed (2c24a7c)
Merge pull request #2503 from mdboom/fix-interactive

Fix interactive mode detection