updated CHANGELOG

CHANGELOG.md

@@ -7,6 +7,11 @@ project adheres to [Semantic Versioning][Semver].
 
   * Your contribution here!
 
+## [4.2.0][] (17 Jan 2018)
+  * Updated Rubies for Travis CI
+  * Update tests to remove MiniTest warnings
+  * Latest Rails (~> 5.1.4) now set in gemspec
+
 ## [4.1.3][] (28 May 2016)
   * Updated gem dependencies
   * Switched from FakeWeb to Webmock
@@ -35,7 +40,8 @@ project adheres to [Semantic Versioning][Semver].
 
 (further change log details for older releases are unavailable)
 
-[Unreleased]: https://github.com/matthutchinson/acts_as_textcaptcha/compare/v4.1.3...HEAD
+[Unreleased]: https://github.com/matthutchinson/acts_as_textcaptcha/compare/v4.2.0...HEAD
+[4.1.3]: https://github.com/matthutchinson/acts_as_textcaptcha/compare/v4.1.3...v4.2.0
 [4.1.3]: https://github.com/matthutchinson/acts_as_textcaptcha/compare/v4.1.2...v4.1.3
 [4.1.2]: https://github.com/matthutchinson/acts_as_textcaptcha/compare/v4.1.1...v4.1.2
 [4.1.1]: https://github.com/matthutchinson/acts_as_textcaptcha/compare/v4.1.0...v4.1.1