Composer: added sspooky13/yaml-standards library to project
Composer: added sspooky13/yaml-standards library to project

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