v1.13.1 on 2023-04-24: Updates for GMI, GEOS-Chem; new SZA wrapper

This release is zero-diff for PCHEM experiments, relative to v1.13.0 .
It extends capability for GMI and GEOS-Chem.
It should be taken with GOCART v2.1.3 or later (QFED path update).

Details:

• Added connectivity from GOCART2G aerosols to GMI chem
• Added CO2 connectivity in GEOS_ChemGridComp for GOCART-GEOS-Chem coupling
• Added a wrapper routine for the MAPL Solar Zenith Angle call, in Chem_Shared
• Removed the routines (originally from GMI) which computed Solar Zenith Angle, in Chem_Shared; but in a later commit, this was added back temporarily, so that older versions of GMI and TR don't complain.
• Fixed a bug that had prevented GMI running with HEMCO

What's Changed

• Add CO2 connectivity between GOCART and GEOS-Chem by @christophkeller in #247
• Use solar zenith angle from MAPL by @mmanyin in #255
• temporarily restore the GmiSolar routines by @mmanyin in #256
• Use serial read for PChem species file by @mathomp4 in #257
• Feature/vvalenti/gocart2g to gmi connectivity by @vlvalenti in #254
• Updated CHANGELOG ahead of next release. by @mmanyin in #258
• Add support for GMI/GOCART2G coupling; new wrapper for MAPL SZA by @mmanyin in #259

Full Changelog: v1.13.0...v1.13.1