CHANGELOG.md in pesapal-1.5.6 vs CHANGELOG.md in pesapal-1.6.0

@@ -1,7 +1,16 @@
 Changelog
 =========
 
+v1.6.0
+------
+
+* Enforce minimum required Ruby version, gem is tested for Ruby '>= 1.9.3'
+* Add Rubocop as a development dependency and Hound to the workflow since we will use them to detect style guide violations
+* Code cleanup here and there
+* Avoid using set_ on method name, this changes the API slightly since we can't use set_env which was public
+
+
 v1.5.6
 ------
 
 * Stop using deprecated OpenSSL::Digest::Digest
 * Enforce minimum required Ruby version, gem is test for Ruby '>= 1.9.2' afterall