- Strip `id` when copying `<stop>` elements from a gradient template (#205) - Strip old HTML `<comment>` elements (#204) - Added `preserveAspectRatio` parameter to `Affine2D.rect_to_rect` (#202) - Added method to resolve nested `<svg>` elements. They are replaced with a `<g>` element containing a `transform` attribute. Clipping the nested viewport and resolving relative percentages relative to the nested viewport is still not supported (#203).