chore(datafile manager): Prepare for 0.6.0 release (#501)

Prepare for datafile-manager 0.6.0 release

Author: mjc1283

packages/datafile-manager/CHANGELOG.md

@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 Changes that have landed but are not yet released.
 
-### Changed
+## [0.6.0] - June 8, 2020
+
+### New Features
 - Added support for authenticated datafiles. `NodeDatafileManager` now accepts `datafileAccessToken` to be able to fetch authenticated datafiles.
 
 ## [0.5.0] - April 17, 2020

packages/datafile-manager/package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@optimizely/js-sdk-datafile-manager",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "description": "Optimizely Full Stack Datafile Manager",
   "repository": {
     "type": "git",