Force time format to include offset, use dc:creator not author publish times were missing timezone even though %z was in the format string. Since time is GMT, hardcoded +0000. Author element is required to be a real address. Use dublin core creator instead (dc;creator). Had to add namespace xmlns:dc to root element.

def init_severity(db, cl, nodeid, newvalues):
    """Make sure severity is set on new issues"""
    if 'severity' in newvalues and newvalues['severity']:
        return

    normal = db.severity.lookup('normal')
    newvalues['severity'] = normal

def init(db):
    db.issue.audit('create', init_severity)