autory inspect variable-sets

Usage:  [OPTIONS]

  Print a tree of variable sets in the model, showing their inheritance
  relationships.

  TODO: Possible optimization: This should be possible without building the
  entire model.

Options:
  --in FILE                       The path to the model file.  [required]
  --style [bottom-up|top-down]    The style of tree to print.

                                  bottom-up: The children of each set are the
                                  variable sets from which it inherits (i.e.,
                                  the parent variable sets). This shows
                                  multiple inheritance. This does not show
                                  unused variable sets.

                                  top-down: The children of each set are the
                                  variable sets that inherit from it. In the
                                  case of multiple inheritance, parts of the
                                  tree may be printed more than once. This
                                  shows all variable sets.

                                  [default: bottom-up]
  --hide-global-variable-set / --show-global-variable-set
                                  Make output more concise by hiding the
                                  global variable set. Ignored with `--style
                                  top-down`.
  --start TEXT                    The name of the variable set at which to
                                  start the tree. The default depends on the
                                  tree style:

                                  bottom-up: The entry point variable set.

                                  top-down: The global variable set.
  --help                          Show this message and exit.