Problem
I. Create a rogram in Python which repeatedly reads numbers until the user enters "done!". Once "done!" is entered, print out the count and sum of the numbers. If the user enters anything other than a number, detect their mistake and print an error message and skip to the next number.
II. Modify your previous program (in part I) but at the end print out, in addition to the count and sum, both the maximum and minimum of the numbers entered.