First Commit; ADDS get_de_defaults function
IGNORE project file
ADDS package and testing structures; ADDS get_de_defaults tests
ADDS scenario function
ADDS get_scenario function
ADDS lots of scenario specifications
ADDS toggle_mutation_matrix functions
ADDS the compute_parameters function
ADDS the root and state functions
ADDS (poorly written) event function.
ADDS findSteadyState function
ADDS data formatting and plotting functions
REFACTORS scenario storage and retrieval
Merge branch 'master' of https://github.com/philliplab/hdsResistanceModel