Twilio

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**Library - Docs**
- [PR 555](https://github.com/twilio/twilio-python/pull/555): Fixing documentation for list parameter types. Thanks to [shwetha-manvinkurke](https://github.com/shwetha-manvinkurke)!

**Library - Fix**
- [PR 552](https://github.com/twilio/twilio-python/pull/552): pin pyjwt dependency. Thanks to [thinkingserious](https://github.com/thinkingserious)!

**Api**
- Add 'Electric Imp v1 Usage' to usage categories

**Conversations**
- Changed `last_read_message_index` type in Participant's resource **(breaking change)**

**Insights**
- Added `created_time` to call summary.

**Sync**
- Remove HideExpired query parameter for filtering Sync Documents with expired **(breaking change)**

**Video**
- [Rooms] Expose maxConcurrentPublishedTracks property in Room resource

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**Api**
- Updated `call_event` default_output_properties to request and response.

**Conversations**
- Added `last_read_message_index` and `last_read_timestamp` to Participant's resource update operation
- Added `is_notifiable` and `is_online` to User's resource
- Added `reachability_enabled` parameters to update method for Conversation Service Configuration resource

**Messaging**
- Added WA template quick reply, URL, and phone number buttons

**Twiml**
- Add `sequential` to `Dial`.

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**Api**
- Added optional `RecordingTrack` parameter for create calls, create participants, and create call recordings
- Removed deprecated Programmable Chat usage record categories **(breaking change)**

**Twiml**
- Add `recordingTrack` to `Dial`.

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**Library - Feature**
- [PR 546](https://github.com/twilio/twilio-python/pull/546): Regional twr header in the access token. Thanks to [charliesantos](https://github.com/charliesantos)!

**Api**
- Remove `RecordingTrack` parameter for create calls, create participants, and create call recordings **(breaking change)**
- Added `RecordingTrack` parameter for create calls and create call recordings
- Add optional property `recording_track` in the participant create request

**Lookups**
- Changed `caller_name` and `carrier` properties type to object **(breaking change)**

**Trunking**
- Added dual channel recording options for Trunks.

**Twiml**
- Add `jitterBufferSize` and `participantLabel` to `Conference`.

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**Api**
- Add new call events resource - GET /2010-04-01/Accounts/{account_sid}/Calls/{call_sid}/Events.json

**Conversations**
- Fixed default response property issue for Service Notifications Configuration

**Insights**
- Removing call_sid from participant summary. **(breaking change)**

**Serverless**
- Allow Service unique name to be used in path (in place of SID) in Service update request

**Sync**
- Added HideExpired query parameter for filtering Sync Documents with expired

**Verify**
- Challenge `Details` and `HiddenDetails` properties are now marked as `PII`
- Challenge `expiration_date` attribute updated to set a default value of five (5) minutes and to allow max dates of one (1) hour after creation.
- Entity `identity` attribute updated to allow values between 8 and 64 characters.
- Verify Service frinedly_name attribute updated from 64 max lenght to 30 characters.

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**Library - Docs**
- [PR 544](https://github.com/twilio/twilio-python/pull/544): add debug logging example. Thanks to [thinkingserious](https://github.com/thinkingserious)!

**Api**
- Added `verify-push` to `usage_record` API

**Bulkexports**
- When creating a custom export the StartDay, EndDay, and FriendlyName fields were required but this was not reflected in the API documentation. The API itself failed the request without these fields. **(breaking change)**
- Added property descriptions for Custom Export create method
- Clarified WebhookUrl and WebhookMethod must be provided together for Custom Export

**Insights**
- Added video room and participant summary apis.

**Ip_messaging**
- Create separate definition for ip-messaging
- Restore v2 endpoints for ip-messaging

**Verify**
- Verify Push madurity were updated from `preview` to `beta`
- `twilio_sandbox_mode` header was removed from Verify Push resources **(breaking change)**

**Video**
- [Rooms] Add Recording Rules API