BeSplit and Upmix support in BeLight

[Jalavera]

Hi this is a message to Kurtnoise13:
When we'll have BeSplit and UpMix support on Belight? These options are grey for some time ago ....

[Kurtnoise]

When ? when I had much more free time.

UpMix is easy to include in BeLight but for BeSplit I've no idea how to integrate some functions. So, if you have some ideas, don't hesitate. ;)