Log Message:
p5-MooseX-Getopt: update to 0.73.

0.73      2018-09-01 05:43:55Z
 - properly wrap usage text that contains newlines (Andreas Koenig, github
   #10)
 - move the exit() to a higher scope, to allow for 'after' method modifiers on
   'print_usage_text' (Michael Schout, github #9)