What Is Gantry 5, and How Does it Differ From Gantry 4?

For the past many years, my company has specialized in building web sites using the Joomla platform as the framework and CMS aspect of nearly all sites developed. On top of that, we quickly gravitated to the (arguably) most popular design platform used atop Joomla web sites — Gantry. Until Gantry 4 (G4 herein), Gantry was basically a continually evolving design platform.