Saving upgrade

[danielpower1859]

Main simulations should:

• not overwrite pre-existing work
• create new folders if needed e.g. sim_name_8
• copy parameter set into new folder

[danielpower1859]

Could be a function

def do( new_folder_name, files_to_copy , copy_files_folder )

[danielpower1859]

Function created. Needs to be incorporated. Start with ecological dynamics function

N/.B. note that it is harder to incorporate this into the script!