[design] should `.size` queries return `int` by convention?

Hi Chapel Developers —

In recent discussions, we've been considering changing .size queries to return int by convention. Today, ranges, domains, and arrays return an integer that's related to their idxType, which can be problematic and sometimes a bit confusing. If you'd like to comment on this topic or show your support for it, please do so on the following issue, which contains the rationale and additional details: