Add invalid token test to batch_spec
Update send_message in batch.rb

Mark token invalid when error code is NotRegistered
Merge branch 'refs/heads/not_registered' into dev
Update test syntax for batch sending
Add test for canonical id response
Update send_message in batch.rb

Add logic for receiving canonical ids from the server
Merge branch 'refs/heads/canonical_id' into dev
bump version
Merge branch 'refs/heads/dev'