mikalhart/TinyGPSPlus — pull request #6 by denravonska (2014-04-24 07:09:52+00:00)
Title: Do not use date/time until we have a fix.

It turned out that some (?) receivers use an old timestamp in at least GGA when they
do not have a position. This causes the date/time to become unreliable so it's better
to wait until we have some sort of reception.

This invalidates #2 and closes #5.