This is a high level list of changes for each version of the Nexmo PHP client. 

### 1.0.0 (Not released yet) [Show Diff](https://github.com/Nexmo/nexmo-php/compare/develop)

* Renamed `Nexmo\Client\Credentials\SharedSecret` to `Nexmo\Client\Credentials\SignatureSecret` [#39](https://github.com/Nexmo/nexmo-php/pull/39)
* Added ability to set callback URL via `setCallback()` [#34](https://github.com/Nexmo/nexmo-php/pull/34)
* Rate limit error when searching messages [#37](https://github.com/Nexmo/nexmo-php/pull/37)