[librsvg] (15 commits) ...Merge branch 'filter-parameters' into 'master'

[Federico Mena Quintero <federico src gnome org>]

Summary of changes:

  5754a55... Split the render method for filter primitives into its own 
  5bf020e... Use the primitive_units from the FilterContext; no need to 
  9741272... Remove the `parent` argument from Primitive::get_bounds
  314d90d... Document::load_from_bytes - Moved from css.rs, as a general
  1d11da9... feMerge - extract the list of inputs to merge before doing 
  b0c8488... Use _node for the unused arguments in filter render functio
  9de48be... feComponentTransfer: clone the table_values instead of keep
  e639e24... Remove unnecessary lifetime
  f0b5b65... feComponentTransfer - extract the functions to use before d
  9bb9a4a... feComponentTranster - Avoid temporary values while getting 
  1f92504... feComponentTransfer - Add tests for extracting the four fun
  34bd587... Remove unnecessary lifetime
  88cfbf7... fe*Lighting - Separate steps for extracting the light sourc
  5339f5d... fe*Lighting - Add tests for extracting the light source
  429b752... Merge branch 'filter-parameters' into 'master'