Allow feedback loops without needing a Hold Value node

I want to be able to make feedback loops with the simplicity of QC.

A value going directly into something like a splitter, and then that output being able to hook directly back.

We’ve been thinking about adding the ability for composition authors to override ports’ event blocking behavior. Once we’ve added that feature, we could make it work on-the-fly — so if you’re trying to connect a cable that would result in an infinite loop, Vuo Editor could automatically set the receiving port to block events, thus functioning as the break in the infinite loop.

I’ve opened this feature request for community voting — it’ll encompass both adding the ability to override, and on-the-fly infinite loop breaking.