* Move use statements to the heads of their modules
* Split local and external module use statements
* Reorder use statements alphabetically by module name

* Add the chroma-from-luma predictor and a test
* Add benchmarks for CfL predictor
* Implement CfL signalling
* Plumb from predict_intra to pred_cfl
* Add struct for CfL parameters
* Compute subsampled luma AC and plumb it with CfL alpha
* Plumb CfL parameters up to RDO
* Add CfL to RDO loop, no parameter search

Raphaël Zumer authored 6 years ago and Thomas Daede committed 6 years ago

Run with --features=comparative_bench
Applies to intra prediction tests and disables native function inlining
Also refactor benchmarks and reduce code duplication