Added main_run_samir.py to run the samir model. Modified config_file to manage input paths. Various bug corrections in dataset dimensions, speed improvements with parallel processing parameters. Added a notebook in postprocessing to plot pixel model outputs.

Fixed equations, deleted some temporary variables to reduce memory usage, used eval() function to improve readability.

run_samir() operational. Outputs are not yet valid, updated dev_samir_xarray.ipynb for comparison with modspa excel and added validation inputs and outputs for comparison.