Issue parsing calendar where there was whitespace after the end field (file downloaded from [GCRTA](http://www.riderta.com/sites/default/files/gtfs/latest/google_transit.zip) attached [google_transit.zip](https://github.com/itinero/GTFS/files/1166271/google_transit.zip)
Issue parsing calendar where there was whitespace after the end field (file downloaded from GCRTA attached
google_transit.zip