Bump version and CHANGELOG for 4.1.2

Author: Lachlan Donald

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [v4.1.2](https://github.com/buildkite/buildkite-agent-metrics/tree/v4.1.2) (2019-01-21)
+[Full Changelog](https://github.com/buildkite/buildkite-agent-metrics/compare/v4.1.1...v4.1.2)
+
+### Fixed
+- Add back cloudwatch metric with only Queue dimension [#69](https://github.com/buildkite/buildkite-agent-metrics/pull/69) (@lox)
+
 ## [v4.1.1](https://github.com/buildkite/buildkite-agent-metrics/tree/v4.1.1) (2019-01-21)
 [Full Changelog](https://github.com/buildkite/buildkite-agent-metrics/compare/v4.1.0...v4.1.1)
 

version/version.go

@@ -1,4 +1,4 @@
 package version
 
 // Version the library version number
-const Version = "4.1.1"
+const Version = "4.1.2"