compat with 0.12 and 0.13 beta
compat with 0.12 and 0.13 beta

PactCoffee/react-body-classname,DLMR/react-document-title,frederickfogerty/react-document-title,Ambroos/react-nested-status,gaearon/react-document-title,iest/react-body-classname,gnoff/react-document-title,danieljuhl/react-document-title,Ambroos/react-document-title