Cut v0.8.0 release (#55)

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [v0.8.0] - 2021-08-15
 ### Changed
 - Updated to Custom Pod Autoscaler `v2.2.0`.
 - Updated to Horizontal Pod Autoscaler CPA `v0.7.0`.
@@ -76,7 +78,9 @@ Holt-Winters configuration.
 - Added the ability to use Linear Regression models to predict future scaling.
 
 [Unreleased]:
-https://github.com/jthomperoo/predictive-horizontal-pod-autoscaler/compare/v0.7.0...HEAD
+https://github.com/jthomperoo/predictive-horizontal-pod-autoscaler/compare/v0.8.0...HEAD
+[v0.8.0]:
+https://github.com/jthomperoo/predictive-horizontal-pod-autoscaler/compare/v0.7.0...v0.8.0
 [v0.7.0]:
 https://github.com/jthomperoo/predictive-horizontal-pod-autoscaler/compare/v0.6.0...v0.7.0
 [v0.6.0]: