code updates, commenting work, clean up of testing code

__pycache__/mcmc_chain_analysis.cpython-37.pyc

__pycache__/simplex_plot.cpython-37.pyc

dyn_glm_chain_analysis.py

dynamic_GLMiHMM_consistency.py

dynamic_GLMiHMM_fit.py

mcmc_chain_analysis.py

simplex_plot.py

test_codes/pymc_compare/call.py

test_codes/pymc_compare/dynglm_optimisation_test.py

test_codes/pymc_compare/gibbs_sample.py