Handle invalid SOH packets

See merge request !27

Update version number in main module

See merge request !26

Address data group feedback

See merge request !25

Remove python 3.7 support

See merge request !24

Update code base to better handle location code

See merge request !23

Implement location code functionality

See merge request !22

Improve how corrupted data packets are handled

See merge request !21

Constraints on Obspy version

See merge request !19