Update history with #116

Author: mattwynne

HISTORY.md

@@ -6,6 +6,7 @@
  * Implement equality for test cases ([#111](https://github.com/cucumber/cucumber-ruby-core/pull/111) @mattwynne)
  * Implement an event bus (moved from Cucumber-Ruby) ([#106](https://github.com/cucumber/cucumber-ruby-core/pull/106) @mattwynne)
  * Use frozen string literals ([#105](https://github.com/cucumber/cucumber-ruby-core/pull/105) @twalpole)
+ * Use tag expressions ([#116](https://github.com/cucumber/cucumber-ruby-core/pull/116) @brasmusson)
 
 ### Bugfixes