• Dramatically reduced filesize after minification (thanks @dlemstra!)
• Improved default handling of where the link is injected so that the loaded CSS ends up after all JS and CSS in the page by default (thanks @paulirish!). Formerly, it injected the stylesheet just before the first script element in the page by default, which could have been before the last stylesheet or style element. The before argument is still available for fine-tuning injection location.
• The previously deprecated callback argument is removed. onloadCSS extension is a normalized replacement for it.
• Improved documentation and browser support table in Readme