Generate changelog for v1.8.4
Generate changelog for v1.8.4

GSadee/Sylius,101medialab/Sylius,diimpp/Sylius,kayue/Sylius,Arminek/Sylius,Zales0123/Sylius,antonioperic/Sylius,Sylius/Sylius,kayue/Sylius,diimpp/Sylius,Sylius/Sylius,Sylius/Sylius,loic425/Sylius,loic425/Sylius,SyliusBot/Sylius,kayue/Sylius,SyliusBot/Sylius,GSadee/Sylius,Arminek/Sylius,lchrusciel/Sylius,Zales0123/Sylius,antonioperic/Sylius,diimpp/Sylius,antonioperic/Sylius,pamil/Sylius,101medialab/Sylius,lchrusciel/Sylius,pamil/Sylius,lchrusciel/Sylius,SyliusBot/Sylius,loic425/Sylius,Zales0123/Sylius,pamil/Sylius,101medialab/Sylius,GSadee/Sylius,Arminek/Sylius