Add svg source for icon and replace icon with one from the SVG. (Redrawn from original, pretty close but not perfect)
Add iconRetinaUrl and shadowRetinaUrl to set urls for retina icons. Add a retina version of the default icon and use it.
Another pass at redrawing the icon. This one looks really close to the original
Move marker svg to src/images/marker.svg
Another pass at the icon. Moved the mid point of the circle down half a pixel to improve the roundness. Tweaked the size of the white circle to better match the old one.
compress images better (smushit)
Another pass on marker-icon, better grid fitting.
Merge pull request #1174 from danzel/master

Add retina marker icon support and retina-ize the default icon