spruce-release Release v1.28.0

New Features

• Spruce now has a (( stringify <REFERENCE> )) operator! It can turn
  arbitrary yaml datapoints into multi-line strings of yaml data, so you can
  merge your yaml, and eat it too.

  Check out https://github.com/geofffranks/spruce/blob/master/doc/operators.md#-stringify-
  for more details

Updates

• spruce is now built with golang 1.15
• various depndency updates and changes to the ci build process

Acknowledgements

This release has been brought to you by @isibeni and @HeavyWombat. Thanks for the features!