Need improve `get_closed_orders`

[seralekseenko]

I think: the limit in arguments would be a solution.

Something like this:

def get_closed_orders(orders_limit):
    """
         Returns a string with the closed orders for the account.
         Use the orders_limit for getting lightweight results.
    """
    # solution below

[b0noI]

done, limit now is argument, I suggest not to ask for more than 10 :D