deleted obsolete files
changed flatten + list comprehension for a flatmap
loading records using MACROs
added sim_params to every ops callback (+ some indentation and variable renames)
fixed argument order in specs
fixed a bug, misc_util:generate_population/2 is now generic and can work with any other usecase
using cartesian product to initialise a population for the skel model
Changed variable names (i.e. State -> St, SimParams -> SP etc.) and removed some obsolete commented code