stateManager: add setter ability to notify observers of state changes
stateManager: add setter ability to notify observers of state changes

Famous/framework,SvitlanaShepitsena/framework-1,tbossert/framework,SvitlanaShepitsena/shakou,woltemade/framework,infamous/famous-framework,ildarsamit/framework,Famous/framework,tbossert/framework,KraigWalker/framework,SvitlanaShepitsena/remax-banner,infamous/framework,infamous/famous-framework,ildarsamit/framework,KraigWalker/framework,colllin/famous-framework,colllin/famous-framework,infamous/framework,jeremykenedy/framework,SvitlanaShepitsena/framework-1,SvitlanaShepitsena/framework,jeremykenedy/framework,SvitlanaShepitsena/framework,woltemade/framework,SvitlanaShepitsena/shakou,SvitlanaShepitsena/remax-banner