fix for ie11
fix for ie11

tim-mc/quill,quilljs/quill,quilljs/quill,sferoze/quilljs,willrowe/quill,sferoze/quilljs,fraywing/quill,quilljs/quill,voxmedia/quill,sferoze/quilljs,willrowe/quill,sferoze/quilljs,fraywing/quill,tim-mc/quill,willrowe/quill,voxmedia/quill,voxmedia/quill