CIP-0020 | Adjust preamble and structure w.r.t CIP-0001

[KtorZ]

Partially done in #394. Only the Path to Active is missing from there as well as renaming the "Motivation" and "Rationale" to their question-like format. But preamble and other sections have been updated accordingly.

[rphair]

OK, when I was re-reading this I was wondering how in general to assign Path to Active for proposals already Active for a while... will be following this one 🤓

[KtorZ]

🤷 , I think the general strategy is mostly about (a) trying to remember why we turned it into active (meeting minutes help remembering here) and (b) capturing this honestly in a few bullet points.

[rphair]

thanks @KtorZ & I'll infer what might already have been stated or obvious, but is counter-intuitive for me... that all merged proposals (unless maybe deliberately declared Inactive?) must have a Path to Active that describes both the acceptance criteria (even if already accepted) & the implementation plan (even if already implemented).

[rphair]

Fixed by #647.