chore: prepare for 3.5.0-beta release (#256)

Author: jaeopt

CHANGELOG.md

@@ -3,6 +3,17 @@
 ## [Unreleased]
 - Added support for authenticated datafiles. `HTTPProjectConfigManager` now accepts `datafile_access_token` to be able to fetch authenticated datafiles.
 
+## 3.5.0-beta
+June 17th, 2020
+
+### New Features:
+- Add support for JSON feature variables ([#251](https://github.com/optimizely/ruby-sdk/pull/251))
+- Add support for authenticated datafiles ([#255](https://github.com/optimizely/ruby-sdk/pull/255))
+
+### Bug Fixes:
+- Handle error with error handler in async scheduler ([#248](https://github.com/optimizely/ruby-sdk/pull/248)).
+- Change single audience result to debug ([#254](https://github.com/optimizely/ruby-sdk/pull/254)).
+
 ## 3.4.0
 January 23rd, 2020
 

lib/optimizely/version.rb

@@ -17,5 +17,5 @@
 #
 module Optimizely
   CLIENT_ENGINE = 'ruby-sdk'
-  VERSION = '3.4.0'
+  VERSION = '3.5.0-beta'
 end