color: parses the CSS colours SVG paint uses (hex, rgb()/hsl(), the 148 named
colours) into an opaque 8-bit sRGB Color, and writes the canonical #rrggbb form.
Shape::stroke is still returned as written; parse_color reads it.
write: SvgWriter (XML declaration, root element with the SVG namespace, elements
and attributes escaped through craft-xml, caller-controlled line breaks), path
data in shortest round-trip form or with fixed decimals, and fixed-decimal
numbers that are never NaN or infinite.
Dylan M. Taylor
12e24c1029