Theme has many PHPCS warnings

[Leland]

The master branch is currently seeing quite a few warnings when the standard WP PHPCS ruleset is run against it. Many of these can be addressed, and in so doing will help standardize the coding style used throughout the project – in addition to more closely adhering to the WordPress PHP Coding Standards.

How can this bug be reproduced?

1. Install theme and the repository's oneliner for PHPCS
2. Run npm run phpcs

What did you expect to happen?
There to be few, or no, warnings.

What happened instead?
There were quite a few warnings.

Include Test Case
You can see the output of PHPCS when following the steps above on this Gist: https://gist.github.com/Leland/13958455550d8e9c234fc688d7e97c33