FR: great improvements folder !

Folder Track Presets:
Folders with their nested members can be saved and imported as Track Presets!

build VSTi Stacks:
to stack Midi/Instrument tracks easily! (see Logic’s folder handling) Edit them together in a single key midi editor e.g.

Routing Folders:
Folders as audio aux group!

Backward Compatibility:
When .cpr projects with these new folders are opened in older Cubase versions, Routing Folders turn into normal group tracks, while Basic Folders are simply dropped. Nesting is flattened.