Update CHANGELOG and README for new version

Author: foxbenjaminfox

Diff for: CHANGELOG.md

@@ -2,6 +2,7 @@
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 # Changelog
 
+- [v3.9.0](#v390)
 - [v3.8.1](#v381)
 - [v3.8.0](#v380)
 - [v3.7.0](#v370)
@@ -29,6 +30,9 @@
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
+### v3.9.0
+  * [#95](https://github.com/foxbenjaminfox/vue-async-computed/pull/95) Fix a bug where default values weren't properly used properly for lazy async computed properties.
+
 ### v3.8.1
   * Bugfix release in order to actually publish the typescript types along with the pacakge.
 

Diff for: README.md

@@ -90,7 +90,7 @@ Alternately, you can link it directly from a CDN:
   That will always point to the latest version of vue-async-computed.
   You probably want to instead pin it to a specific version:
 -->
-<script src="https://unpkg.com/vue-async-computed@3.8.1"></script>
+<script src="https://unpkg.com/vue-async-computed@3.9.0"></script>
 ```
 
 When used with a module system such as `webpack` or `browserify`, you need to explicitly install `vue-async-computed` via `Vue.use()`: