[librsvg] (23 commits) ...Merge branch 'resolve-and-render-filters' into 'master'

[Federico Mena Quintero <federico src gnome org>]

Summary of changes:

  509a512... LightSource doesn't need to be public
  3cee484... Remove obsolete comment; there is no Lighting trait anymore
  8dd0751... New enum PrimitiveParams, with the resolved parameters for 
  9354e84... New trait method FilterEffect::resolve() -> Result<Primitiv
  3dd1911... Resolve filter primitives, then use static dispatch to rend
  3fbf45e... feBlend - resolve and render separately
  aebc211... feColorMatrix - resolve and render separately
  23d2edd... feComponentTransfer - resolve and render separately
  8810123... feComposite - resolve and render separately
  96d8c0c... feConvolveMatrix - resolve and render separately
  67063f0... feDisplacementMap - resolve and render separately
  43499a1... feFlood - resolve and render separately
  a2a5379... feGaussianBlur - resolve and render separately
  349bde2... feImage - resolve and render separately
  314dd1b... fe*Lighting - resolve and render separately
  45f9056... feMerge - resolve and render separately
  51312d9... feMorphology - resolve and render separately
  1941661... feOffset - resolve and render separately
  ae0888c... feTile - resolve and render separately
  cdea662... feTurbulence - resolve and render separately
  8087115... Make render_primitive() pretty again
  e4d71f1... Appease clippy by removing clone() for Copy types
  ca7d359... Merge branch 'resolve-and-render-filters' into 'master'