Twilio

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**Library - Feature**
- [PR 520](https://github.com/twilio/twilio-python/pull/520): add regional and edge support. Thanks to [eshanholtz](https://github.com/eshanholtz)!

**Api**
- Add optional `emergency_caller_sid` parameter to SIP Domain
- Updated `call_reason` optional property to be treated as PII
- Added optional BYOC Trunk Sid property to Sip Domain API resource

**Autopilot**
- Add Restore resource to Autopilot Assistant

**Contacts**
- Added contacts Create API definition

**Events**
- Subscriptions API initial release

**Numbers**
- Add Evaluations API

**Supersim**
- Allow filtering the Fleets resource by Network Access Profile
- Allow assigning a Network Access Profile when creating and updating a Fleet
- Add Network Access Profiles resource

**Verify**
- Add `CustomCode` optional parameter on Verification creation.
- Add delete action on Service resource.

**Voice**
- Added endpoints for BYOC trunks, SIP connection policies and source IP mappings

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**Library - Feature**
- [PR 517](https://github.com/twilio/twilio-python/pull/517): add details to TwilioRestException. Thanks to [ashish-s](https://github.com/ashish-s)!

**Preview**
- Added `Dispatch` version to `preview`

**Studio**
- Reroute Create Execution for V2 to the V2 downstream

**Supersim**
- Add Networks resource

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**Library - Chore**
- [PR 513](https://github.com/twilio/twilio-python/pull/513): remove S3 URLs from test data. Thanks to [childish-sambino](https://github.com/childish-sambino)!

**Api**
- Updated description for property `call_reason` in the call create request

**Contacts**
- Added Read, Delete All, and Delete by SID docs
- Initial Release

**Studio**
- Rename `flow_valid` to `flow_validate`
- Removed `errors` and `warnings` from flows error response and added new property named `details`
- Add Update Execution endpoints to v1 and v2 to end execution via API
- Add new `warnings` attribute v2 flow POST api

**Twiml**
- Add enhanced attribute to use with `speech_model` for the `Gather` verb

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**Api**
- Add optional 'secure' parameter to SIP Domain

**Authy**
- Added an endpoint to list the challenges of a factor
- Added optional parameter `Push` when updating a service to send the service level push factor configuration

**Bulkexports**
- exposing bulk exports (vault/slapchop) API as public beta API

**Flex**
- Adding `queue_stats_configuration` and `wfm_integrations` to Flex Configuration

**Serverless**
- Add Function Version Content endpoint
- Allow build_sid to be optional for deployment requests

**Supersim**
- Remove `deactivated` status for Super SIM which is replaced by `inactive` **(breaking change)**

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**Api**
- Add optional `emergency_calling_enabled` parameter to SIP Domain
- Add optional property `call_reason` in the call create request

**Authy**
- Added `friendly_name` and `config` as optional params to Factor update
- Added `config` param to Factor creation **(breaking change)**

**Preview**
- Renamed `SuccessRate` endpoint to `ImpressionsRate` for Branded Calls (fka. Verified by Twilio) **(breaking change)**

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**Library - Feature**
- [PR 507](https://github.com/twilio/twilio-python/pull/507): add new max_retries param to TwilioHttpClient. Thanks to [msaelices](https://github.com/msaelices)!

**Authy**
- Added the `configuration` property to services to return the service level configurations
- Added optional parameter `Push` when creating a service to send the service level push factor configuration
- Remove FactorStrength support for Factors and Challenges **(breaking change)**

**Messaging**
- Correct the alpha sender capabilities property type **(breaking change)**

**Preview**
- Removed `/Devices` register Branded Calls endpoint, as per iOS sample app deprecation **(breaking change)**
- Removed `Twilio-Sandbox-Mode` request header from the Branded Calls endpoints, as not officially supported **(breaking change)**
- Removed `Verify` version from `preview` subdomain in favor to `verify` subdomain. **(breaking change)**

**Serverless**
- Add UI-Editable field to Services

**Supersim**
- Add `inactive` status for Super SIM which is an alias for `deactivated`

**Taskrouter**
- Adding value range to `priority` in task endpoint

**Verify**
- Fix `SendCodeAttempts` type. It's an array of objects instead of a unique object. **(breaking change)**