bumped version to 3.13.0
bumped version to 3.13.0

ifeelgoods/prerender,challengerdeep/prerender,ms123s/prerender,goibibo/prerender,Kaliber/prerender,inventaire/prerender,GrabCAD/prerender,oqv/prerender,prerender/prerender,danishin/prerender-server,icilalune/prerender,fiverr/prerender,ovotech/prerender,inventaire/prerender,zumper/prerender,l0ne/prerender,netconstruct/prerender,dwdm/prerender,gamejolt/prerender,tjfamodu/prerender,ntucker/prerender,netlify/prerender,PaigeeWorld/prerender,bookbottles/prerender,danishin/prerender-server,ArnaudValensi/prerender-schedule-from-sitemap,goabout/prerender,viovendi/prerender,daniel-shin1104/prerender-server,LendioDevs/prerender,JoaquinSiabra/prerender,fledit/fledit.static,SIXNetworks/prerender,JuoCode/prerender,goabout/prerender,jahmad-fareportal/prerender,mgmco/prerender,daniel-shin1104/prerender-server,GerardoNevarez/prerender,aortbals/prerender,fiverr/prerender,wcandillon/prerender