Twilio

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**Library**
- PR 444: VCORE-3651 Add support for *for* attribute in twiml element. Thanks to nmahure!

**Api**
- Add `call_sid_to_coach` parameter to participant create request
- Add `voice_receive_mode` param to IncomingPhoneNumbers create

**Video**
- [Recordings] Expose `offset` property in resource

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**Chat**
- Add User Channel instance resource

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**Api**
- Add Proxy Active Sessions category to usage records

**Preview**
- Add `Actions` endpoints and remove `ResponseUrl` from assistants on the Understand api

**Pricing**
- add voice_country resource (v2)

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**Library**
- PR 443: move index and readme_include to root. Thanks to mbichoffe!

**Studio**
- Studio is now GA

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**Library**
- PR 442: Auto generate docs with sphinx. Thanks to mbichoffe!
- PR 437: Tag and push Docker latest image when deploying with TravisCI. Thanks to jonatasbaldin!

**Chat**
- Make message From field updatable
- Add REST API webhooks

**Notify**
- Removing deprecated `segments`, `users`, `segment_memberships`, `user_bindings` classes from helper libraries. **(breaking change)**

**Preview**
- Add new Intent Statistics endpoint
- Remove `ttl` from Assistants

**Twiml**
- Add `Connect` and `Room` for Programmable Video Rooms

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**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