Add support for aspect ratio override
Better default aspect ratios for state/province flags
Remove box shadows in PNGs (use themes for this)
racing.
Merge branch 'master' of https://github.com/stevenrskelton/flag-icon
Merge branch 'racing' of https://github.com/stevenrskelton/flag-icon

Conflicts:
	flag-icon.html
Add German states and NASCAR flags.
Shorten flag type attributes.