v3.1.0 on 2025-11-12: new GMI mechanisms
Uptick to GMI v1.5.0, which includes Lyman-alpha, and a few new chemical mechanisms. (Non-zero diff)
NOTE: After setup, be sure to change photolysis from 7.4 to 6.5, since CTM lacks RI and RL.
Modified the reading of MERRA2 wind vectors (10m and 2m), regridding U and V at the same time. (This is non-zero diff).