SVG Rendering about openrndr

[hamoid]

Maybe a good start could be to add links and information here as comments? For example links showing what is currently implemented, what is missing from the 'tiny' profile, how large is the 'full' profile... I believe one thing currently missing is text rendering. I think so far you @ryanbateman, @ricardomatias, @Yvee1 and I @hamoid have made small contributions to the SVG area.

Are these the right specs of SVG Tiny?
https://www.w3.org/TR/SVGTiny12/single-page.html

[hamoid]

See #227 (Greatly improve SVG support)

[Yvee1]

I've worked on parsing a list of transforms in #178, and I think that that works now and is complete (at least the 2D transformations, not the 3D ones, I used this mozilla page as reference), but I haven't tested it much.

Some missing things I've encountered with the svg reader so far are:

1. Parsing styles in group nodes. E.g. the svg of the greek delta that I put in the tests (link) has a white rectangle as background, but this is parsed/drawn by openrndr as a black rectangle currently. So I think style="fill:white; stroke:white" is not parsed or used.
2. I also think documentBounds is never assigned anything other than the default value. But I discovered there's also root.bounds which is probably what you want in most cases

[hamoid]

Related issue: #131 (Add support to viewBox attribute)