Since 8.x-1.0-alpha2 version, this module is not depending on GeoPHP module anymore. The GeoPHP library dependency is being managed through composer. Please read https://www.drupal.org/node/2718229 for more information about composer dependencies.
Besides of that, this version fixes some bugs and includes some minor improvements.
Lingotek module 8.x-1.6 includes improvements in the reaction after a phase is completed in the TMS, a tool for editing the metadata of your content in case there are any issues and several bug fixes.
These release is known to be compatible with all supported releases of Drupal Core (> 8.1.x).
See full list of issues below.