Add three variables which can be brought in as defaults in variable override set or set in UI: incubating_at_simulation_start, ill_at_simulation_start ja recovered_at_simulation_start
Set defaults for Varsinais-Suomi with Stetson-Harrison method, replacing import infections intervention at simulation start date. Comment the defaults away for now, since there is a set of interventions to replicate the real epidemic progression.
Bring in the numbers of the dead and in icu and in ward from casefiles
Apply these to initialize the state of the population at simulation start.
Improvements for later:
Currently all the ill and incubating agents are set to the first day of the infection. The days since infection or ilness onset could be scattered more.
Improvements for later: