---------------------------- **Api** - Add support for sip domains to map credential lists for registrations
**Preview** - Remove `ttl` from Assistants
**Proxy** - Enable setting a proxy number as reserved
**Twiml** - Add support for SSML lang tag on Say verb
6.15.1
Not secure
---------------------------- **Library** - PR 439: Override generated attributes when generating TwiML. Thanks to cjcodes!
**Video** - Add `group-small` room type
6.15.0
Not secure
---------------------------- **Library** - PR 436: Add request body validation. Thanks to cjcodes!
**Twiml** - Add support for SSML on Say verb, the message body is changed to be optional **(breaking change)**
6.14.10
Not secure
----------------------------- **Api** - Add `cidr_prefix_length` param to SIP IpAddresses API
**Studio** - Add new /Execution endpoints to begin Engagement -> Execution migration
**Video** - [Rooms] Allow deletion of individual recordings from a room
6.14.9
Not secure
---------------------------- **Library** - PR 434: Escape DOCKER_PASSWORD and DOCKER_USERNAME when logging into Docker Hub. Thanks to jonatasbaldin!
6.14.8
Not secure
---------------------------- **Library** - PR 433: Fix all Docker image build and push issues. Thanks to jonatasbaldin! - PR 432: Add docker to TravisCI. Thanks to jonatasbaldin! - PR 431: Add provider to TravisCI. Thanks to jonatasbaldin! - PR 430: Deploy just on tags and Python 3.6. Thanks to jonatasbaldin!
**Api** - Release `Call Recording Controls` feature support in helper libraries - Add Voice Insights sub-category keys to usage records