Add KinKal_to_UPS

Move the content of the KinKal_to_UPS repo into this repo.

This tag also picks up small fixes since v1_5.

What's Changed

• continue to work on clang tidy by @rlcee in #98
• remove shellcheck by @rlcee in #99
• flag warnings by @rlcee in #100
• Ct 230525 by @rlcee in #101
• find missing include by @rlcee in #102
• Import KinKal_to_UPS by @kutschke in #103

New Contributors

• @kutschke made their first contribution in #103

Full Changelog: v1_5...v1_6