[abtest] Fixed case 1.1.1
Merge branch 'master' into ab-tests

# By Chris Boden (1) and others
# Via Chris Boden
* master:
  Enforce sub-protocol checks. fixes #4
  fixed typo in InvalidArgumentException name
  Added subprotocol header.
autobahn tests 2.*
Merge branch 'voryx-ab' into ab-tests
Merge branch 'ab-tests'