fix #1445
fix #1445

Firefox has object method named watch. Would affect other attribute
names that happen to be the same as native object methods.

willrowe/quill,voxmedia/quill,willrowe/quill,quilljs/quill,voxmedia/quill,voxmedia/quill,sferoze/quilljs,sferoze/quilljs,willrowe/quill,quilljs/quill,sferoze/quilljs,quilljs/quill,sferoze/quilljs