v0.1.0

Release v0.1.0

• Adding regsync command and image to copy images between registries.
• Locking added to regclient to handle concurrent requests.
• Improved formatting / templating functionality.
• Handling images with external layers (copying Windows images).
• Fixing permissions of /home/appuser in the regclient/regctl and
  regclient/regsync images.
• Bug fix for passing multiple host configs to regclient.