-added plot_hmm_models() to project for convenient, parallelized hmm replotting
2.1.32
-changed dat.make_unit_arrays() to start the unit array at the valve open rather than the valve close
2.1.31
-added dataset.edit_unit_descriptor() and dio.h5io.edit_unit_descriptor() methods -fixed maplotlib requierment in requirements.txt since newer versions break phmm.HMMHandler.plot_saved_models()
2.1.30
-usability fix in experiment.get_electrode_unit_counts()