feat: Release 6.0.0

Author: cwelch5

CHANGELOG.md

@@ -1,3 +1,8 @@
+<a name="6.0.0"></a>
+# [6.0.0](https://github.com/nfl/react-helmet/compare/5.2.0...6.0.0) (2020-04-09)
+
+
+
 <a name="6.0.0-beta.2"></a>
 # [6.0.0-beta.2](https://github.com/nfl/react-helmet/compare/6.0.0-beta...6.0.0-beta.2) (2020-01-27)