chore: Prepare 1.3.0 release (#278)

Author: mjc1283

CHANGELOG.MD

@@ -7,10 +7,19 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 Changes that have landed but are not yet released.	Changes that have landed but are not yet released.
 
-## [1.3.0-beta3] - June 30th, 2020
+## [1.3.0] - July 7th, 2020
+## New Features
+- Add support for JSON feature variables ([#250](https://github.com/optimizely/go-sdk/pull/250), [#251](https://github.com/optimizely/go-sdk/pull/251), [#253](https://github.com/optimizely/go-sdk/pull/253))
+- Add support for authenticated datafiles ([#267](https://github.com/optimizely/go-sdk/pull/267))
+- Expose ability to customize URL for event dispatcher. ([#268](https://github.com/optimizely/go-sdk/pull/268))
+
 ## Bug Fix
-- Provide syncronization for Notification Center Cache ([#273](https://github.com/optimizely/go-sdk/pull/273))
+- Provide synchronization for Notification Center Cache ([#273](https://github.com/optimizely/go-sdk/pull/273))
+- Fix unbounded memory allocation in event dispatcher ([#275](https://github.com/optimizely/go-sdk/pull/275))
 
+## [1.3.0-beta3] - June 30th, 2020
+## Bug Fix
+- Provide synchronization for Notification Center Cache ([#273](https://github.com/optimizely/go-sdk/pull/273))
 
 ## [1.3.0-beta2] - June 17th, 2020
 ## Bug Fix

pkg/event/version.go

@@ -18,7 +18,7 @@
 package event
 
 // Version is the current version of the client
-var Version = "1.3.0-beta3"
+var Version = "1.3.0"
 
 // ClientName is the name of the client
 var ClientName = "go-sdk"