Add --tar-options option to archive-restore.
Update user commands and tests for recent changes in D8.
Role tests now passing for D8.
Core tests passing now on D8.
Minor code style improvements.
Move cache clear validation into its own validate callback.
Further simplify cache-get a little.
Trivial simplication in cache-set
Boring refactor of cache-set.
Move some cache-set validation into a validate callback.
Rollback separate validate callback for cache-set. Hsd problem with re-reading the STDIN.
Add a 'cache' engine as preparation for port to D8.
Port cache commands to D8.
Declare the tags argument to cache-set.
Minor docs improvement.
Skip field tests in D8 for now as these commands are not yet ported
Fix #229. Update Image commands for Drupal 8. Added the start of an image-create command. It Needs work still.
Finish adding image-derive command (was briefly called image-create). Has tests.
Fix #203. Add browse command.
Minor updating of config commands.