Merge remote-tracking branch 'tfheen/master'

* tfheen/master:
  Whitespace
  Add Fastly copyright
  Raise error instead of calling exit unconditionally
  Make it possible to override what .users file to use
  Allow passing extra args to gpg
  Allow alternative trusted_users files
  Only run parse_command if run directly
  Move pws to pws.rb and add symlink back