Avisynth Version - zoomFactor is INT, so only integer scaling allowed

[chrixxxx]

The directShow version of this amazing upscaler allows not integer decimal values for scaling, so you can obtain the exact amount of scaling to fit your monitor.

For example.. from a 640x480 DVD-source I can go to FullHD with a zoomFactor of 2.25, while if it's PAL (720x576) I can use 1.875 to obtain the exact amount of scaling I require.

The Avisynth version of Anime4KCPP uses an INT value for this parameter, so I can't have precise control on the output resolution (as I have with the DS version) when processing some video clips to create upscaled/enhanced version of them through my Avisynth scripts.

Since the DS filter supports decimal values.. it would be great having this possibility in the Avisynth version too.

[TianZerL]

This adjustment has been committed.