Update changelog (add styx-0.7.8)

CHANGELOG.md

@@ -1,5 +1,30 @@
 # Change Log
 
+## [styx-0.7.8](https://github.com/HotelsDotCom/styx/tree/styx-0.7.8) (2018-07-13)
+[Full Changelog](https://github.com/HotelsDotCom/styx/compare/styx-0.7.7...styx-0.7.8)
+
+**Implemented enhancements:**
+
+- Remove fasterxml objects from the BackendService etc. classes [\#132](https://github.com/HotelsDotCom/styx/issues/132)
+
+**Fixed bugs:**
+
+- Origin metrics for request cancellations count all requests [\#199](https://github.com/HotelsDotCom/styx/issues/199)
+
+**Closed issues:**
+
+- Cookie names should be treated case-sensitively [\#185](https://github.com/HotelsDotCom/styx/issues/185)
+- Add admin endpoint for querying specific metrics [\#182](https://github.com/HotelsDotCom/styx/issues/182)
+
+**Merged pull requests:**
+
+- Add SENDING\_RESPONSE\_CLIENT\_CLOSED state into HttpPipelineHandler FSM [\#214](https://github.com/HotelsDotCom/styx/pull/214) ([mikkokar](https://github.com/mikkokar))
+- Allow custom plugin loader injection [\#213](https://github.com/HotelsDotCom/styx/pull/213) ([fantayeneh](https://github.com/fantayeneh))
+- Fix issue \#199: Request cancellation per origin metric. [\#209](https://github.com/HotelsDotCom/styx/pull/209) ([mikkokar](https://github.com/mikkokar))
+- Add admin endpoint for querying specific metrics by name [\#206](https://github.com/HotelsDotCom/styx/pull/206) ([kvosper](https://github.com/kvosper))
+- Styx logo in readme file centered [\#195](https://github.com/HotelsDotCom/styx/pull/195) ([ClaudioCorridore](https://github.com/ClaudioCorridore))
+- Cookies should not be case insensitive  [\#186](https://github.com/HotelsDotCom/styx/pull/186) ([dvlato](https://github.com/dvlato))
+
 ## [styx-0.7.7](https://github.com/HotelsDotCom/styx/tree/styx-0.7.7) (2018-05-17)
 [Full Changelog](https://github.com/HotelsDotCom/styx/compare/styx-0.7.6...styx-0.7.7)