Investigate Use of Multi-byte Strings and UTF-8

[dmolsen]

strtolower should use mb_strtolower() but need to figure out use of mb_* elsewhere. Need to double-check front-end/pattern paths and assets reloading continuously.

[dmolsen]

Swap out default string manipulation for https://packagist.org/packages/danielstjules/stringy

[dmolsen]

Didn't realize how deep of a problem this would be. Want to roll in a large number of other changes to make this easier so moving to v3.