Many fixes to handling continuous/multiple socket connections. #8

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Commits on May 16, 2020

SARA-R4 HARDWARE MODULE MUST BE UPDATED WITH NEW FIRMWARE FROM UBLOX FOR FULL FUNCTIONALITY. DEVICE CURRENTLY SHIPS WITH OBSOLETE FIRMWARE.
Matthew Menze
committed
Library did not support UDP listening as specified by uBlox. Implemented rough stack of code to listen for UDP packets. Still needs some cleanup.
Matthew Menze
committed