Rearchitecture simulate

[AtiyahElsheikh]

resolves #77

Going to work afterwards on #74 (refactoring iteration) & potentially #65 (lazy iterators)

[AtiyahElsheikh]

I have also fixed the arguments of checkassumptions & verbose in the main simualtion

[mhinsch]

Fine with me, but I think the return value of the main script should not be determined by verbose.

[AtiyahElsheikh]

• I started the re-factoring of main of for-loop body into a subroutine any way
• Allowing fixed & dynamic random seed generation ( default is fixed)

[mhinsch]

Looks good, but please don't change the return value of Main* depending on the verbose parameter. Verbose has nothing to do with the return value.

[AtiyahElsheikh]

Multiple simulations with fixed seed was still random. This is because inputs generation was not seed-dependent. This is not hopefully fixed