Deoldify Vapoursynth filter

[Dan64]

Sorry, but I released a mall maintenance build: v4.6.8

main changes:

• The scene change detection algorithm has been improved to properly handle low thresholds levels.
  
• The chapter 4.0.2 of HAVC user guide has been update to provide examples using low thresholds levels
  

Dan

P.S.
Example of movie using the settings described in chapter 4.0.2: The maltese falcon (colorized, 1941)