Note: This is a breaking release as it affects both the source files and distributed CSS files.

Highlights

• A new Sass function for EMs that is essentially the same function for REMS but outputs for the EM units.
• All default breakpoints and media queries use values with EM units. This maintains the most cross-browser compatibility and avoids some of the browser-bug issues with using REMs.
• The classes .padding-null and .margin-null have been removed. They have been replaced with .padding-nulled and .margin-nulled to maintain consistency with the already existing list modifier class, .list--nulled