Issue #2234277 by cilefen, hussainweb, Xano, netlooker, martin107: Composer update (includes security fixes).
Issue #2234331 by mortendk, lauriii, LewisNyman, sqndr, rteijeiro, G-raph, amitgoyal: Fixed Change the body classes to follow Drupal 8 CSS standards.
Issue #1003788 by stefan.r, Alan D., JimmyAx, Josh Waihi, john_brown, bellHead, twistor, wiifm, bzrudi71, pwolanin, gngn, Gisle, robhardwick: Fixed PostgreSQL: PDOException:Invalid text representation when attempting to load an entity with a string or non-scalar ID.