Add support for stroke-dasharray attribute.
Add dashed stroke SVG to demo project. Clean up unidiomatic -init method where sample svg names are set up.
Allow white space delimited lists in SVG css attributes. The spec indicates they should be valid; see stroke-dasharray http://www.w3.org/TR/SVG/painting.html
Handle viewBoxes with no white space -- for example, viewBox="0,0,100,100"
Revert "Allow white space delimited lists in SVG css attributes. The spec indicates they should be valid; see stroke-dasharray http://www.w3.org/TR/SVG/painting.html"

This reverts commit 9d644b0ff22345861c1e12d7a04a2b0a0ea7a7f6.