Allow for a minimum distribute version that is older than the downloaded version
Merge pull request #2254 from mdboom/distribute_minimum_version

Error with installing latest developer version of matplotlib on Travis
Fix bug in WebAgg backend on master
Fix font selection in texmanager
Do snapping in draw_path_collection
Merge pull request #2257 from mdboom/line_collection_offset

Offset between plot and LineCollection
Performance improvements to WebAgg backend
Merge pull request #2260 from mdboom/texmanager-font-family-fix

texmanager font family fix
Fix #1547
Merge pull request #1547 from mdboom/qt4editor-formlayout-float-bug

qt4_editor/formlayout.py TypeError: float() argument must be a string or a number
Bump to version 1.3.0
Address @pelson's comments in the PR.
Merge pull request #2261 from mdboom/webagg-improvements

WebAgg performance improvements
Fix bug reading favicon as a utf-8 encoded file.
Make logo_sidebar_horiz.png less wide
Mention six in the what's new and INSTALL docs
Merge pull request #2267 from mdboom/mention-six-in-install

Mention `six` in what's new and install docs
Merge pull request #2265 from mdboom/webagg-python3-encoding-issues

WebAgg favicon serving error in Python 3
If pygobject is installed, but not the gobject introspection bindings for gtk, it throws a RuntimeError, not an ImportError, and we need to catch that.
Merge pull request #1939 from mdboom/gtk-test-without-x11

GTK error, failed building on command line