Docker Machine Driver Hetzner Versions Save

• added --hetzner-placement-group and --hetzner-auto-spread flags to support placement groups (#72 , thanks @anebi)

• added --hetzner-key-label flag to add metadata for newly created SSH keys (#69, thanks @JanKoppe)

• [Build] add arm64 architecture for M1 based Macs (#66, thanks @cedricziel)

• added --hetzner-firewalls flag (#60, thanks @fnkr)

• added --hetzner-server-label option: Servers can now be assigned additional metadata during creation, e.g. for use with k8s and load balancers (#56)

fixes #55: automatically created keys should be removed again

• adds #53: allow additional ssh keys using --hetzner-additional-key/HETZNER_ADDITIONAL_KEYS

• fixes #49: multiple machines can now be created with the same SSH key, re-using a potentially existing key from Hetzner, that has the same fingerprint (thanks @am97)
• due to breaking changes in key handling (not always attempting to upload), this is a major release -- the changes should not affect existing users, however, as creating machines in the affected way would always fail beforehand

• feat: added option for using private network (#44)