Parse StopTime as last entity in GtfsReader

[highsource]

GtfsReader currently reads StopTimes between Trip and ServiceCalendar. Would it be possible to parse StopTimes as the last entity? As far as I know, StopTimes is normally the largest file in GTFS and StopTimes (indirectly) reference ServiceCalendar and ServiceCalendarDate via Trip/serviceId.

I'm implementing a "streaming" load of GTFS into a graph database (as a time-expanded graph). The import runs for some specified date. So I'd like to filter out irrelevant StopTimes and I need ServiceCalendars and ServiceCalendarDates for this before reading StopTimes.

I've solved it at the moment by subclassing the GtfsReader and changing the order of the entity classes. I think it is generaly reasonable and wanted to propose it as a change.