Update changelog, bump v3.1.5

* Closes #64

Author: hollodotme

CHANGELOG.md

@@ -3,7 +3,7 @@
 All notable changes to this project will be documented in this file. This project adheres
 to [Semantic Versioning](http://semver.org/) and [Keep a CHANGELOG](http://keepachangelog.com).
 
-## [3.1.5] - 2020-12-09
+## [3.1.5] - 2020-12-10
 
 ### Fixed