What is the "Voice Setter System"?

[Allen]

what is the new voice setter system in the commit 0afda72 ?
https://github.com/christophhart/HISE/commit/0afda721520845b35798200ae7553e8311dc9be6

[Christoph Hart]

@Allen a change in the internal scriptnode API that improves the performance of polyphonic nodes in some cases. Nothing to worry about unless you write scriptnode classes.