Instrument data handler and some parsers
Adds parser and test for HYPM_01_WPF_ENG
Updated mi data handlers and tests
Fixed data handler polling
Fixed polling test
Added slocum bulk data ingestion
Swapped event sets when terminating polling
Updates handlers and instrument tests
Adds test data files for MI samples
First refactor of get_data to provide file position
Updates to save progress when reading files
Merge pull request #843 from tgiguere/new_get_data

Updated data agents and handlers with MI data handlers