977 remove t0 from simulation class and allow flexible start times in model#979

annawendler merged 8 commits intomainSciCompMod/memilio:mainfrom

977-allow-other-start-days-than-zero-in-the-ide-modelSciCompMod/memilio:977-allow-other-start-days-than-zero-in-the-ide-modelCopy head branch name to clipboard