v1.0.5

What's Changed

• RC 1.0.5 by @semuadmin in #34

1. Add new optional timetags argument to SPARTNReader & SPARTNMessage, to allow them to use any available 32-bit gnssTimeTag values from the incoming datastream in order to decrypt messages (rather than having to provide an explicit basedate).
   • The timetags argument is a dict of the format {0: 495763673, 1: 485866844, 3: 410283479} where the key represents the message subType (0 = GPS, 1 = GLO, 2 = GAL, etc.), and the value represents the 32-bit gnssTimeTag value from the data stream (if present).
   • If a nominal decryption basedate of TIMEBASE (datetime(2010, 1, 1, 0, 0, tzinfo=timezone.utc)), or integer 0, is passed to SPARTNReader, it will endeavour to capture 32-bit gnssTimeTag values for each msgSubtype from the incoming data stream and pass these to SPARTNMessage via the timetags arg to decrypt messages of the same msgSubtype with 16-bit gnssTimeTags (timeTagtype=0).
   • NB: this will only work if the data stream contains valid 32-bit gnssTimeTag values for the same msgSubtype e.g. if an HPAC message with msgSubtype=2 precedes a GAD or OCB message with msgSubType=2 and timeTagtype=0 - until such an eventuality occurs, decryption of GAD or OCB messages may fail!
   • Always use quitonerror=ERRLOG or quitonerror=ERRIGNORE when setting basedate to TIMEBASE.
2. SPARTMMessage will now return explicit SPARTNDecryptionError if unable to successfully decrypt/decode message using key and basedate provided.

Full Changelog: v1.0.4...v1.0.5