First stable release!

The feature set and the structure of commands has now mostly stabilized, so we're releasing first official stable release 1.0.0! Here's a couple of updates since the previous version v0.11.0:

• when listing objects via forge-dm list-objects, you can now use a new argument -p/--prefix <string> to only list objects whose IDs start with given prefix
• when working with Design Automation bundles, bundle aliases, activities, and activity aliases, users always had to check for the existence of these entities and then use either create-* or update-* commands accordingly; now, you can just call create-* commands with an --update flags, or update-* commands with a --create flag, and the command line tool will create or update the entities automatically
  • see how this change simplified the example bash script included in this repo
• the help output now explains when fully qualified IDs vs short IDs are required; simply look out for *-full-id and *-short-id argument names