Nunavut 3.0 and 4.0

First, I’d like to acknowledge that I’ve been neglecting Nunavut lately. Sorry. I’m currently working on a 3.0 release in concert with pydsdl 1.22.0 (as soon as @pavel.kirienko approves Allow relative target paths by thirtytwobits · Pull Request #110 · OpenCyphal/pydsdl · GitHub) to enable some exciting new features. That said, I’m considering a proposal to simplify the Nunavut internals that would see a quick skip over 3.0 to a 4.0. I’ve posted the details in this issue → Nunavut 4.0 proposal · Issue #341 · OpenCyphal/nunavut · GitHub

comments welcome.