Unified tests & simulation

[nikkolasg]

Currently, to run the simulation as a test you write

simul.Start("mySimul.toml")

while running it as a real simulation you NEED to do (otherwise only run localhost):

simul.Start()

The real simulation should accept toml file as well, or at least display an error message specifying that something's wrong. For example, no flags were working at all when using simul.Start("tomlFile") as a real simulation.