Change exports mixin because as of Sass 3.4 index() now returns null rather than false if the value isn’t found in the list
Change exports mixin because as of Sass 3.4 index() now returns null rather than false if the value isn’t found in the list

TomiS/sassy-ink,industrydive/sassy-ink,industrydive/sassy-ink,TomiS/sassy-ink,TomiS/sassy-ink,industrydive/sassy-ink,faustgertz/sassy-ink,istvan-ujjmeszaros/html-email-toolset,faustgertz/sassy-ink,istvan-ujjmeszaros/html-email-toolset,faustgertz/sassy-ink