Tests are comprehensive Names are immaculate

Testing for accuracy of leap year century, leap year not century, and
non leap year century and standard leap year and standard year
Test for responses, and improves method names

Granny doesn't hear silence. Test for Grannys response to what Sonny
says.

Simpler method names.
Sloppy commit.  Playing catchup in VCS Management
Rubocop Style, ignoring Style/Filename