shrine

Pull request #1522: Feature/SHRINE2020 1652

Merge in SHRINE/shrine from feature/SHRINE2020-1652 to feature/SHRINE2020-1218-cats-effect-upgrade

* commit 'd2329eda49852aabb1deb04b6a25b2ccd00d896f':
  Removed the unused implicit from RetryIO for SHRINE2020-1652
  Tweak RetryIO in a chaser ticket