… with validation of inputs in model BUT this did increase the run time

…was just feeling slow on friday...!

…Python too, so can compare results from same param

…tr - should be less than 15, but was 20 before)

…ns in DESCRIPTION and README

…hod() to package addressing issue #13

…14)

…estthat)

…dation error msg)

… list of 2)

…results being appropriate under high demand, and that the runner output is an appropriately formatted list

…v is the object being modified in model(), but we return a formatted results list processed by get_mon_arrivals() and get_mon_resources(), not the raw env object, so calling it env is misleading)

…un_results() + lint + rerun (off charge so slower)

…me, utilisation and arrivals as expected