added "% unique" calculation to personal_name; still need to format it
formatted personal name "unique %" result; inserted line break to improve readability of code
added code to print 10 random names from full_name, to see how they looked.
refactored random name printing code to be less obtuse. Is that a refactor? Still not 100% sure.
added code to mke random names look better & include index with each name; also learned that starting a print function with ("\n",) inserts a space at the start of the next line. Why?