bumped version to 3.20.1
bumped version to 3.20.1

icilalune/prerender,l0ne/prerender,SIXNetworks/prerender,LendioDevs/prerender,mgmco/prerender,gamejolt/prerender,ArnaudValensi/prerender-schedule-from-sitemap,JoaquinSiabra/prerender,inventaire/prerender,fiverr/prerender,PaigeeWorld/prerender,netlify/prerender,goabout/prerender,fiverr/prerender,aortbals/prerender,GrabCAD/prerender,jahmad-fareportal/prerender,viovendi/prerender,challengerdeep/prerender,oqv/prerender,dwdm/prerender,goabout/prerender,GerardoNevarez/prerender,inventaire/prerender,Kaliber/prerender,prerender/prerender,JuoCode/prerender,netconstruct/prerender,bookbottles/prerender,wcandillon/prerender