[FEATURE REQUEST] Use all start/end dates in all benchmark yml files

[lizziel]

I noticed that when the 1-yr benchmarks are called they are passed start year for GC-Classic ref only. That start is then applied to GC-Classic and GCHP ref and dev. This came up because I was doing a GCHP vs GCHP comparison for 2020 rather than 2019 but found that I had to change the year of the GC-Classic ref entry. The GCHP dates were ignored.

I would like to expand the GCPy functionality so that you can compare any year for any of the four runs rather than a single year only. Having data for January through December of a single year would still be required for each of GC-Classic and GCHP refs and devs.

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Stale issue message

[lizziel]

@msulprizio @yantosca Do you know if this feature was added?