bbox_inches=tight support for *all* figure artists.
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Added modifier key event handling for the macosx backend and cleaned up key event handler.
Updated to not use NSDictionary literals for pre-obj2.0 compiler support.
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Fix #1839: Compilation on Solaris
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Removed shift from modifier flags as the character returned already includes shift operation
Merge pull request #1841 from cimarronm/macosx+modifiers

Fixes issue #1259 - Added modifier key handling for macosx backend
Fixes #1860: Unfilled members of collections are not handled correctly in the PDF backend.  Also fixes a related bug that alpha could not be set on individual members of a collection.
Fixes #1862: The PS backend would inadvertently close file handles passed to it on Python 3.  The TextIOWrapper that handles the encoding from unicode to ascii needs to be detached before its destructor is called, otherwise it will call close on the underlying file object.  Also cleans up how with statements are handled to avoid the sometimes problematic null contextmanager.
Merge pull request #1862 from mdboom/ps-file-closing

Matplotlib savefig() closes BytesIO object when saving in postscript format
fix the pyplot version of rc_context

Before this, when using the rc_context dangling from pyplot, one would
get an AttributeError for ``__exit__``, because plt.rc_context wasn't
actually returning anything before this change.
Document change to collections.
Merge pull request #1860 from mdboom/collection-fill

Bug with PatchCollection in PDF output
Merge pull request #1866 from ivanov/fix-rc_context

fix the pyplot version of rc_context
Installed inkscape on the travis-ci vm.
Clarify which baseline image files to include in the git repository.
Merge pull request #1870 from mdboom/doc/making-tests

Testing documentation isn't clear about which files to copy
Merge pull request #1869 from pelson/svg_testing

Installed inkscape on the travis-ci vm.