update changelog

Author: ziluvatar

CHANGELOG.md

@@ -4,12 +4,19 @@
 All notable changes to this project will be documented in this file starting from version **v4.0.0**.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## 8.1.0 - 2017-10-09
+
+ - #402: Don't fail if captureStackTrace is not a function (#410) ([77ee965d9081faaf21650f266399f203f69533c5](https://github.com/auth0/node-jsonwebtoken/commit/77ee965d9081faaf21650f266399f203f69533c5))
+ - #403: Clarify error wording for "Expected object" error. (#409) ([bb27eb346f0ff675a320b2de16b391a7cfeadc58](https://github.com/auth0/node-jsonwebtoken/commit/bb27eb346f0ff675a320b2de16b391a7cfeadc58))
+ - Enhance audience check to verify against regular expressions (#398) ([81501a17da230af7b74a3f7535ab5cd3a19c8315](https://github.com/auth0/node-jsonwebtoken/commit/81501a17da230af7b74a3f7535ab5cd3a19c8315))
+
+
 ## 8.0.1 - 2017-09-12
 
  - Remove `lodash.isarray` dependency (#394) ([7508e8957cb1c778f72fa9a363a7b135b3c9c36d](https://github.com/auth0/node-jsonwebtoken/commit/7508e8957cb1c778f72fa9a363a7b135b3c9c36d))
 
 ## 8.0.0 - 2017-09-06
-  
+
   **Breaking changes: See [Migration notes from v7](https://github.com/auth0/node-jsonwebtoken/wiki/Migration-Notes:-v7-to-v8)**
 
  - docs: readme, migration notes ([12cd8f7f47224f904f6b8f39d1dee73775de4f6f](https://github.com/auth0/node-jsonwebtoken/commit/12cd8f7f47224f904f6b8f39d1dee73775de4f6f))