Setup UPGRADE file for 1.2 release
Setup UPGRADE file for 1.2 release

Arminek/Sylius,Arminek/Sylius,lchrusciel/Sylius,gorkalaucirica/Sylius,mbabker/Sylius,dragosprotung/Sylius,ezecosystem/Sylius,Mozan/Sylius,foobarflies/Sylius,ezecosystem/Sylius,loic425/Sylius,itinance/Sylius,101medialab/Sylius,venyii/Sylius,itinance/Sylius,bitbager/Sylius,pjedrzejewski/Sylius,Mozan/Sylius,venyii/Sylius,Joypricecorp/Sylius,ezecosystem/Sylius,dragosprotung/Sylius,GSadee/Sylius,Zales0123/Sylius,pamil/Sylius,antonioperic/Sylius,Sylius/Sylius,NeverResponse/Sylius,pjedrzejewski/Sylius,Brille24/Sylius,NeverResponse/Sylius,bitbager/Sylius,mbabker/Sylius,foobarflies/Sylius,SyliusBot/Sylius,bitbager/Sylius,Zales0123/Sylius,foobarflies/Sylius,diimpp/Sylius,antonioperic/Sylius,loic425/Sylius,gseidel/Sylius,lchrusciel/Sylius,pamil/Sylius,pjedrzejewski/Sylius,gseidel/Sylius,Mozan/Sylius,Joypricecorp/Sylius,lchrusciel/Sylius,Zales0123/Sylius,torinaki/Sylius,Brille24/Sylius,Sylius/Sylius,gseidel/Sylius,torinaki/Sylius,NeverResponse/Sylius,Sylius/Sylius,videni/Sylius,foobarflies/Sylius,ezecosystem/Sylius,Mozan/Sylius,NeverResponse/Sylius,kayue/Sylius,gseidel/Sylius,diimpp/Sylius,gorkalaucirica/Sylius,pjedrzejewski/Sylius,videni/Sylius,Brille24/Sylius,kayue/Sylius,GSadee/Sylius,pamil/Sylius,101medialab/Sylius,Mozan/Sylius,gorkalaucirica/Sylius,torinaki/Sylius,venyii/Sylius,dragosprotung/Sylius,itinance/Sylius,Joypricecorp/Sylius,GSadee/Sylius,antonioperic/Sylius,videni/Sylius,venyii/Sylius,itinance/Sylius,torinaki/Sylius,kayue/Sylius,dragosprotung/Sylius,diimpp/Sylius,Arminek/Sylius,SyliusBot/Sylius,videni/Sylius,bitbager/Sylius,Joypricecorp/Sylius,Brille24/Sylius,mbabker/Sylius,mbabker/Sylius,101medialab/Sylius,SyliusBot/Sylius,gorkalaucirica/Sylius,loic425/Sylius