Implemented iterable/union.
Implemented iterable/union.

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