v0.6.0

Implementation Changes

• Add routing header to method metadata.(#123)
• Warn when deprecated client_config argument is used. (#123)
• Add https://www.googleapis.com/auth/dialogflow OAuth scope. (#123)
• Add channel to gRPC transport classes. (#123)

Features

• Add argument output_audio_config to detect_intent. (#123)
• Add update_knowledge_base method. (#123)
• Add update_document and reload_document methods. (#123)

Documentation:

• Change copyright year to 2019. (#123)

Internal / Testing Changes

• Use mock to patch create_channel in unit tests. (#123)