v0.1.6

What's changed?

• Added high-level catalog test and catalog publish subcommands that test or publish a set of specs in a single step. These subcommands wrap up the existing draft create->author->test|publish->delete workflow by simply performing all of those steps behind the scenes.
• Flow specs are no longer required to import each other when referencing Collections defined in another file. You may still use import to (only) include other specs whenever the current spec is itself included.
• You can now pull live (running) Flow specs into your local directory in a single step, using flowctl catalog pull-specs. You can do this by name, prefix, and or by type.
• Various other improvements to the CLI to make it more ergonomic