Twilio

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**Note:** This release contains breaking changes, check our [upgrade guide](./UPGRADE.md2021-09-22-6xx-to-7xx) for detailed migration notes.

**Library - Fix**
- [PR 560](https://github.com/twilio/twilio-python/pull/560): update code and tests for pyjwt>=2.0.0. Thanks to [karls](https://github.com/karls)! **(breaking change)**

**Library - Docs**
- [PR 570](https://github.com/twilio/twilio-python/pull/570): Add upgrade guide for dropping python 2.7, 3.4 & 3.5. Thanks to [JenniferMah](https://github.com/JenniferMah)!

**Events**
- Add segment sink

**Messaging**
- Add post_approval_required attribute in GET us_app_to_person_usecase api response
- Add Identity Status, Russell 3000, Tax Exempt Status and Should Skip SecVet fields for Brand Registrations
- Add Should Skip Secondary Vetting optional flag parameter to create Brand API

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**Api**
- Revert adding `siprec` resource
- Add `siprec` resource

**Messaging**
- Add 'mock' as an optional field to brand_registration api
- Add 'mock' as an optional field to us_app_to_person api
- Adds more Use Cases in us_app_to_person_usecase api transaction and updates us_app_to_person_usecase docs

**Verify**
- Verify List Templates API endpoint added.

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**Api**
- Add Programmabled Voice SIP Refer call transfers (`calls-transfers`) to usage records
- Add Flex Voice Usage category (`flex-usage`) to usage records

**Conversations**
- Add `Order` query parameter to Message resource read operation

**Insights**
- Added `partial` to enum processing_state_request
- Added abnormal session filter in Call Summaries

**Messaging**
- Add brand_registration_sid as an optional query param for us_app_to_person_usecase api

**Pricing**
- add trunking_numbers resource (v2)
- add trunking_country resource (v2)

**Verify**
- Changed to private beta the `TemplateSid` optional parameter on Verification creation.
- Added the optional parameter `Order` to the list Challenges endpoint to define the list order.

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**Library - Fix**
- [PR 572](https://github.com/twilio/twilio-python/pull/572): fix sonar analysis. Thanks to [shwetha-manvinkurke](https://github.com/shwetha-manvinkurke)!

**Library - Chore**
- [PR 571](https://github.com/twilio/twilio-python/pull/571): integrate with sonarcloud. Thanks to [shwetha-manvinkurke](https://github.com/shwetha-manvinkurke)!

**Api**
- Corrected the `price`, `call_sid_to_coach`, and `uri` data types for Conference, Participant, and Recording **(breaking change)**
- Made documentation for property `time_limit` in the call api public. **(breaking change)**
- Added `domain_sid` in sip_credential_list_mapping and sip_ip_access_control_list_mapping APIs **(breaking change)**

**Insights**
- Added new endpoint to fetch Call Summaries

**Messaging**
- Add brand_type field to a2p brand_registration api
- Revert brand registration api update to add brand_type field
- Add brand_type field to a2p brand_registration api

**Taskrouter**
- Add `X-Rate-Limit-Limit`, `X-Rate-Limit-Remaining`, and `X-Rate-Limit-Config` as Response Headers to all TaskRouter endpoints

**Verify**
- Add `TemplateSid` optional parameter on Verification creation.
- Include `whatsapp` as a channel type in the verifications API.

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**Conversations**
- Expose ParticipantConversations resource

**Taskrouter**
- Adding `links` to the activity resource

**Verify**
- Added a `Version` to Verify Factors `Webhooks` to add new fields without breaking old Webhooks.

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**Conversations**
- Changed `last_read_message_index` and `unread_messages_count` type in User Conversation's resource **(breaking change)**
- Expose UserConversations resource

**Messaging**
- Add brand_score field to brand registration responses