Bugfix release for Habitat Upload Issue

This bug-fix release fixes an issue reported where the Habitat upload thread would break if upload_listener_position was set to False, with habitat_enabled set to True (often the case when auto_rx is used in a chase car). Thanks to Brian OZ1SKY for bringing the issue to my attention.

There is no need to update to this release if you are uploading your listener position.

Please report any problems encountered either on the mailing list, or by raising an issue on this repository.

PLEASE DO NOT USE THE GITHUB GENERATED RELEASE ZIP FILES - USE THE INSTALLATION/UPDATE STEPS DESCRIBED IN THE WIKI