Add transition tutorial.
Link transition tutorial.
Combine asides.
Fix capitalization.
Fix typo.
Add wind speed map.
Add missing image.
Add 512 paths.
Add election graphic.
Add new election map.
Add tax burden graphic.
Optimize images.
Add TopoJSON.
Add link to general update pattern examples.
Update note.
PT Serif & PT Sans.
Add map-making tutorial.
Add chicago homicides.
Update to Leaflet 0.5.

Still has bug where zoom-in location is wrong, though.
Use clearRect rather than fillRect.