• Extra content inserted by editors are now being removed within <foreignObject> as well thus fixing bug “Namespace prefix … is not defined“ after applying SVGO.
• Doctype with entities declartion is now also being removed since SVGO correctly parses them starting from the version 0.6.2.
• Corrected moveGroupAttrsToElems not to move attributes to g content if it's referenced (has an id).
• collapseGroups now don't collapse a group if it has an animated attribute (SMIL).