Use qsv/cat for merging GUNC summaries

[dialvarezs]

And add sorting step to make snapshots stable

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[jfy133]

I guess it's fine, although I still wonder if the overhead of a whole process just for merging/sorting TSV tables is worth it computationally...

why did the sort in the collectFile not work properly again?

Maybe at least customise the base.config config to something really low (e.g. 1GB RAM, 1-2 CPUs or something)

[dialvarezs]

TBH when it didn't work even when sorting by hash, I stopped trying with collectFile().
Personally I like it more this way, because it's cleaner, more maintainable, and consistent with the rest of the code. And a single light process per run is a small price to pay. I agree about setting less resources for it, going to do that.