Updates for Dist::Zilla and Related Items

[timlegge]

In moving to Dist::Zilla I decided to address some of the items that showed up for perl critic.

The two argument open has been getting some attention lately so it would make sense regardless:

188a3f9 Add SECURITY.md policy

Perl Critic Items:

abbf443 Quiet perl critic - use IO::Interactive::is_interactive() instead of -t
0d0f091 Quiet perl critic - Code before strictures are enabled and add warnings
cde58be "require" statement with library name as string
f42494c move to three-arg open
a1a479e Add enough pod for sign and verify to quiet the pod checker tests
397f67b Remove spaces from eol

Dist::Zilla
b5d933c Change build process to Dist::Zilla