Added source-map-support as a dev-dep.
Added source-map-support as a dev-dep.

Fixes build.

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