v0.8.0

• crf-search: Tweak 2nd iteration logic that slices the crf range at the 25% or 75% crf point.
  • Widen to 20%/80% to account for searches of the "middle" two subranges being more optimal.
  • Disable when using custom min/max crf ranges under half the default.
• Add sample-encode info to crf-search & auto-encode. Show sample progress and encoding/vmaf fps.
• Improve sample-encode progress format consistency.
• Add crf-search -v flag to print per-sample results.
• Add auto-encode -v flag to print per-crf results, -vv to also print per-sample results.