Added:
- HTTP API UserCredentials [\#55](https://github.com/prooph/event-store-client/issues/55)
- refactor to use new async interfaces [\#81](https://github.com/prooph/event-store-client/pull/81) ([prolic](https://github.com/prolic))
- rename almost all exceptions [\#80](https://github.com/prooph/event-store-client/pull/80) ([prolic](https://github.com/prolic))
- update to v8 interfaces [\#79](https://github.com/prooph/event-store-client/pull/79) ([prolic](https://github.com/prolic))
- update projections managers [\#78](https://github.com/prooph/event-store-client/pull/78) ([prolic](https://github.com/prolic))
- use prooph/event-store v8 as core [\#74](https://github.com/prooph/event-store-client/pull/74) ([prolic](https://github.com/prolic))
- cleanup deps [\#73](https://github.com/prooph/event-store-client/pull/73) ([prolic](https://github.com/prolic))
- remove unused dependencies from composer.json [\#71](https://github.com/prooph/event-store-client/pull/71) ([SunMar](https://github.com/SunMar))
- Test php 7.3 on travis [\#66](https://github.com/prooph/event-store-client/pull/66) ([prolic](https://github.com/prolic))

Fixed:
- Unit test problem [\#67](https://github.com/prooph/event-store-client/issues/67)
- fixed unit test problem [\#77](https://github.com/prooph/event-store-client/pull/77) ([prolic](https://github.com/prolic))