Refactor apply_delta.
Refactor apply_delta.

DemocracyOS/quill,psiemens/quill,JoshBarr/quill,KentZheng/gitFlowTIA,studio666/quill,mobitroll/kahoot-quill,milqfm/quill,praneybehl/quill,eXcomm/quill,KentZheng/testingflow,quilljs/quill,jziggas/quill,syungkeaw/quill,casetext/quill,sferoze/quilljs,hampsterx/quill,jcppman/quill,fraywing/quill,KentZheng/gitFlowTIB,mobitroll/kahoot-quill,sferoze/quilljs,DemocracyOS/quill,quilljs/quill,anovi/quill,milqfm/quill,willrowe/quill,KentZheng/gitFlowTIA,Asana/quill-1,jayzawrotny/quill,casetext/quill,tim-mc/quill,voxmedia/quill,kmoe/quill,voxmedia/quill,Benibur/quill,sferoze/quilljs,Asana/quill-1,KentZheng/gitFlowTIB,dahal/quill,willrowe/quill,KentZheng/testingflow,smartsocialmedia/quill,tim-mc/quill,voxmedia/quill,psiemens/quill,sferoze/quilljs,kmoe/quill,smartsocialmedia/quill,willrowe/quill,quilljs/quill,gutenye/quill,fraywing/quill