Added Config Stats function
Added Config Stats function

Added a function to generate stats about a given config hash ref.
Initially the function calculates the max length of generated
passwords, the min length of generated passwords, and the number of
random numbers needed to generate a password using the config.

bbusschots/hsxkpasswd,bbusschots/xkpasswd.pm,bbusschots/xkpasswd.pm,clsn/hsxkpasswd