Integrate p_astro model fitting and prediction
This MR incorporates SPIIR's Python 3 p_astro model into the pipeline to make p_astro.json predictions in postcoh_finalsink.py, addressing #27.
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This MR incorporates SPIIR's Python 3 p_astro model into the pipeline to make p_astro.json predictions in postcoh_finalsink.py, addressing #27.