Correct Version in Changelog from 0.6.3 to 0.6.0

Author: ElliottAYoung

CHANGELOG.md

@@ -3,7 +3,7 @@ Version History
     * All Version bumps are required to update this file as well!!
 ----
 
-* 0.6.3 - Set SEO Keyword feed to be an array rather than comma separated String
+* 0.6.0 - Set SEO Keyword feed to be an array rather than comma separated String
 * 0.5.3 - Extract a framework-agnostic sanitized_webpage_url method
 * 0.5.2 - Addendum to previous version: fix expiry issues
 * 0.5.1 - Set Webpage feed cache to never expire