None of that yet. The underlying SVG library, nanosvg, is very simple with no text support.

The first priority was to solve paths to pixels efficiently, including text (50,000 glyphs @ 60fps).

Gradients will be added when time allows, as I have code from a previous engine.

The coverage algorithm can be extended to support cheap box blurs, which could be used for drop shadows.

Ah ok cool! So what path to this being used in applications do you have in mind? Are you hoping to implement a decent part of the spec in the coming years? Do you have a rough timeline?