prep for 4.0.0 release

Author: majormoses

CHANGELOG.md

@@ -4,6 +4,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This CHANGELOG follows the format listed [here ](https://github.com/sensu-plugins/community/blob/master/HOW_WE_CHANGELOG.md)
 
 ## [Unreleased]
+
+## [4.0.0] - 2018-12-15
 ### Security
 - updated rubocop dependency to `~> 0.51.0` per: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8418. (@majormoses)
 - updated yard dependency to `~> 0.9.11` per: https://nvd.nist.gov/vuln/detail/CVE-2017-17042 (@majormoses)
@@ -94,7 +96,8 @@ pending pods, the restart count portion has been split into it's own check, `che
 ### Added
 - initial release
 
-[Unreleased]: https://github.com/sensu-plugins/sensu-plugins-kubernetes/compare/3.3.0...HEAD
+[Unreleased]: https://github.com/sensu-plugins/sensu-plugins-kubernetes/compare/4.0.0...HEAD
+[4.0.0]: https://github.com/sensu-plugins/sensu-plugins-kubernetes/compare/3.3.0...4.0.0
 [3.3.0]: https://github.com/sensu-plugins/sensu-plugins-kubernetes/compare/3.2.0...3.3.0
 [3.2.0]: https://github.com/sensu-plugins/sensu-plugins-kubernetes/compare/3.1.1...3.2.0
 [3.1.1]: https://github.com/sensu-plugins/sensu-plugins-kubernetes/compare/3.1.0...3.1.1

lib/sensu-plugins-kubernetes/version.rb

@@ -1,7 +1,7 @@
 module SensuPluginsKubernetes
   module Version
-    MAJOR = 3
-    MINOR = 3
+    MAJOR = 4
+    MINOR = 0
     PATCH = 0
 
     VER_STRING = [MAJOR, MINOR, PATCH].compact.join('.')