sankey
update diagram with selected filters
better tooltips
make sankey.js a dependency
histogram barchart
add libraries for google maps
mortgage data
Merge branch 'master' of https://github.com/blendlabs/angular-dataviz into maps

Conflicts:
doc/index.html
doc/js/demoApp.js
basic map viz
attempt to correct extent handling
more bower stuff
add ui.map as a dependency
improve map viz (filtering, clustering)
map demo
new dist file
added constant update or update only on mouseup for barchart brush
first attempt at brush snapping
fixed snapping
x position based on key if available
new version