[swift-evolution] [Review] SE-0084: Allow trailing commas in parameter lists and tuples

[Tino Heth]

> Tino, would you like to form an 'official' proposal for this(newlines as separators) feature? As I can see, there is a much support in community for this idea, but no one said yet he/she will create a proposal for this.(or I just missed this)
I feel honored, but I guess there are others (native speaker, closer relation to the core team...) who are better suited than me...
On the other hand, I lack fear of seeing a proposal rejected ;-), so as long as deeper thinking doesn't reveal any downsides, I don't mind spending some hours and putting my name on the pull request.
Afaics, there are no plans to change SE-0084 to at least add "making commas optional if followed by a newline" as an alternative, so the first step would be a separate thread ("Newlines as item separators in lists"?) — but as all examples in the proposal use commas followed by newlines, I think all of its goals could be archived