Add fast path for appending updates to the end of the queue
Add fast path for appending updates to the end of the queue

This is the most common case, so we should avoid scanning the entire
list to get to the end.

tomocchino/react,jdlehman/react,camsong/react,nhunzaker/react,terminatorheart/react,Simek/react,jzmq/react,STRML/react,aickin/react,yangshun/react,niubaba63/react,camsong/react,AlmeroSteyn/react,yangshun/react,quip/react,jquense/react,nhunzaker/react,rricard/react,roth1002/react,joecritch/react,krasimir/react,pyitphyoaung/react,aickin/react,roth1002/react,claudiopro/react,jordanpapaleo/react,rohannair/react,camsong/react,krasimir/react,empyrical/react,Simek/react,richiethomas/react,shergin/react,apaatsio/react,dilidili/react,camsong/react,krasimir/react,aickin/react,anushreesubramani/react,roth1002/react,empyrical/react,yungsters/react,jquense/react,STRML/react,jameszhan/react,rohannair/react,edvinerikson/react,empyrical/react,jordanpapaleo/react,rickbeerendonk/react,VioletLife/react,prometheansacrifice/react,richiethomas/react,yiminghe/react,kaushik94/react,glenjamin/react,sekiyaeiji/react,mhhegazy/react,ArunTesco/react,rricard/react,trueadm/react,mosoft521/react,maxschmeling/react,richiethomas/react,wmydz1/react,jquense/react,richiethomas/react,silvestrijonathan/react,chenglou/react,syranide/react,chenglou/react,apaatsio/react,flipactual/react,ericyang321/react,TheBlasfem/react,niubaba63/react,ericyang321/react,jdlehman/react,facebook/react,Simek/react,VioletLife/react,mosoft521/react,wmydz1/react,jquense/react,terminatorheart/react,rickbeerendonk/react,AlmeroSteyn/react,edvinerikson/react,empyrical/react,quip/react,VioletLife/react,brigand/react,prometheansacrifice/react,wmydz1/react,mhhegazy/react,shergin/react,glenjamin/react,flarnie/react,rlugojr/react,mhhegazy/react,maxschmeling/react,tomocchino/react,dilidili/react,yangshun/react,andrerpena/react,jameszhan/react,wmydz1/react,VioletLife/react,richiethomas/react,yungsters/react,aickin/react,jdlehman/react,chenglou/react,sekiyaeiji/react,yiminghe/react,billfeller/react,leexiaosi/react,rickbeerendonk/react,silvestrijonathan/react,chicoxyzzy/react,ericyang321/react,claudiopro/react,shergin/react,rickbeerendonk/react,silvestrijonathan/react,bspaulding/react,krasimir/react,glenjamin/react,brigand/react,wmydz1/react,jorrit/react,brigand/react,rricard/react,TheBlasfem/react,claudiopro/react,billfeller/react,trueadm/react,jzmq/react,jdlehman/react,pyitphyoaung/react,bspaulding/react,STRML/react,yungsters/react,anushreesubramani/react,mosoft521/react,ericyang321/react,chenglou/react,rickbeerendonk/react,bspaulding/react,rickbeerendonk/react,facebook/react,jzmq/react,facebook/react,mjackson/react,joecritch/react,dilidili/react,kaushik94/react,acdlite/react,TheBlasfem/react,quip/react,yungsters/react,maxschmeling/react,yiminghe/react,aickin/react,Simek/react,syranide/react,jquense/react,prometheansacrifice/react,jorrit/react,mosoft521/react,silvestrijonathan/react,yungsters/react,rlugojr/react,tomocchino/react,jameszhan/react,maxschmeling/react,TheBlasfem/react,quip/react,andrerpena/react,acdlite/react,richiethomas/react,chenglou/react,mosoft521/react,AlmeroSteyn/react,andrerpena/react,yangshun/react,dilidili/react,AlmeroSteyn/react,niubaba63/react,roth1002/react,trueadm/react,jorrit/react,billfeller/react,yiminghe/react,richiethomas/react,yungsters/react,chenglou/react,syranide/react,leexiaosi/react,pyitphyoaung/react,rricard/react,cpojer/react,anushreesubramani/react,niubaba63/react,billfeller/react,acdlite/react,nhunzaker/react,maxschmeling/react,bspaulding/react,kaushik94/react,claudiopro/react,cpojer/react,Simek/react,jameszhan/react,jquense/react,Simek/react,camsong/react,jorrit/react,empyrical/react,apaatsio/react,cpojer/react,niubaba63/react,terminatorheart/react,glenjamin/react,anushreesubramani/react,cpojer/react,jquense/react,sekiyaeiji/react,edvinerikson/react,chicoxyzzy/react,roth1002/react,terminatorheart/react,rohannair/react,edvinerikson/react,flarnie/react,cpojer/react,rohannair/react,claudiopro/react,anushreesubramani/react,jorrit/react,yangshun/react,niubaba63/react,ericyang321/react,VioletLife/react,mjackson/react,chicoxyzzy/react,chicoxyzzy/react,joecritch/react,shergin/react,joecritch/react,trueadm/react,bspaulding/react,mjackson/react,VioletLife/react,jordanpapaleo/react,kaushik94/react,STRML/react,trueadm/react,pyitphyoaung/react,prometheansacrifice/react,roth1002/react,quip/react,chicoxyzzy/react,ericyang321/react,claudiopro/react,shergin/react,chicoxyzzy/react,cpojer/react,silvestrijonathan/react,nhunzaker/react,krasimir/react,yiminghe/react,billfeller/react,mosoft521/react,leexiaosi/react,facebook/react,jordanpapaleo/react,ericyang321/react,AlmeroSteyn/react,jzmq/react,acdlite/react,shergin/react,mjackson/react,tomocchino/react,krasimir/react,TheBlasfem/react,nhunzaker/react,prometheansacrifice/react,jordanpapaleo/react,flarnie/react,aickin/react,camsong/react,joecritch/react,STRML/react,jameszhan/react,facebook/react,silvestrijonathan/react,flarnie/react,rlugojr/react,jordanpapaleo/react,anushreesubramani/react,rricard/react,kaushik94/react,rohannair/react,empyrical/react,Simek/react,yungsters/react,edvinerikson/react,facebook/react,apaatsio/react,mjackson/react,flipactual/react,jzmq/react,jordanpapaleo/react,mhhegazy/react,apaatsio/react,brigand/react,cpojer/react,trueadm/react,acdlite/react,yangshun/react,rohannair/react,mhhegazy/react,dilidili/react,empyrical/react,AlmeroSteyn/react,jdlehman/react,apaatsio/react,rlugojr/react,pyitphyoaung/react,pyitphyoaung/react,edvinerikson/react,rohannair/react,claudiopro/react,yangshun/react,flarnie/react,trueadm/react,brigand/react,andrerpena/react,terminatorheart/react,rlugojr/react,tomocchino/react,glenjamin/react,chicoxyzzy/react,mjackson/react,facebook/react,jzmq/react,andrerpena/react,glenjamin/react,AlmeroSteyn/react,camsong/react,tomocchino/react,acdlite/react,prometheansacrifice/react,flarnie/react,syranide/react,maxschmeling/react,aickin/react,rricard/react,pyitphyoaung/react,wmydz1/react,joecritch/react,anushreesubramani/react,apaatsio/react,ArunTesco/react,flarnie/react,quip/react,brigand/react,ArunTesco/react,dilidili/react,mhhegazy/react,dilidili/react,maxschmeling/react,nhunzaker/react,bspaulding/react,yiminghe/react,VioletLife/react,prometheansacrifice/react,nhunzaker/react,terminatorheart/react,jdlehman/react,mjackson/react,krasimir/react,shergin/react,TheBlasfem/react,rickbeerendonk/react,acdlite/react,edvinerikson/react,kaushik94/react,jzmq/react,wmydz1/react,jorrit/react,rlugojr/react,jameszhan/react,billfeller/react,silvestrijonathan/react,rlugojr/react,jdlehman/react,bspaulding/react,kaushik94/react,joecritch/react,yiminghe/react,niubaba63/react,brigand/react,mhhegazy/react,STRML/react,chenglou/react,quip/react,jorrit/react,billfeller/react,mosoft521/react,STRML/react,jameszhan/react,glenjamin/react,flipactual/react,andrerpena/react,roth1002/react,tomocchino/react