• Fixed bug: options object that you pass to popup gets modified after the initialization (#217, #203).
• Fixed bug: zoom module creates global variable (#226).
• Fixed bug: gallery from AJAX popups stacks content if it's switched before loading has finished.
• Indented and combined SCSS classes (thanks to @nschonni).
• $.magnificPopup.close() now doesn't throw an exception if there's no instance (#221, thanks to @mjlescano).