TriggerID now grabbed for subthreshold GRBs
Addresses #138 (closed) and https://sentry.io/organizations/ligo-caltech/issues/981485808/events/f65531e078834981b0ab0f54421f35a1/
Subthreshold events are missing 'TrigID' in the voevent .xml which is preventing them to be processed as external events. This works around that by grabbing this field from the 'ivorn' section instead which is present for all fermi grb voevents.
Edited by Brandon Piotrzkowski