Implemented iterable/first.
Implemented iterable/first.

beni55/trine,ivoreis/trine,izaakschroeder/trine,tomekwi/trine,mcanthony/trine,jussi-kalliokoski/trine,jussi-kalliokoski/trine,tomekwi/trine,beni55/trine,stoeffel/trine,edge/trine,ivoreis/trine,edge/trine,stoeffel/trine,mcanthony/trine,izaakschroeder/trine