batch rm commands from worksheets to handle ordering properly
cleaned up 'cl info' to make it more uniform and print out all the fields
support print out info of multiple bundles at once, some refactoring
support 'cl info -f' for displaying individual fields, 'args' to regenerate the CLI command, -r for display raw info
support spec history ranges (e.g., ^1-3)
keep track of actions performed on a bundle (e.g., kill), save to metadata
BundleClient.mimic passes back entire plan of bundles to create, support dry-run (-r)