SteamCore 1.17

Added compability with Unreal Engine 4.25 Updated Steamworks version v1.47 (UE 4.25+) Added bUsesPresence option to CreateSteamCoreSession node Added IsValid nodes for several steam handles Added IsValid exec nodes Added IsIdentical exec nodes ISteamApps Added GetLaunchCommandLine function (sdk 1.46, ue 4.24+)