Prepare 2.3.1 release

Author: binarylogic

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.3.1] - 2017-09-26
+
 ### Fixed
 
   - Forcibly fallback to SSLv23 if SSLv3 fails. SSLv3 is only used for outdated OpenSSL versions.
@@ -50,7 +52,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
     instead of applying back pressure.
 
 
-[Unreleased]: https://github.com/timberio/timber-ruby/compare/v2.3.0...HEAD
+[Unreleased]: https://github.com/timberio/timber-ruby/compare/v2.3.1...HEAD
+[2.3.1]: https://github.com/timberio/timber-ruby/compare/v2.3.0...v2.3.1
 [2.3.0]: https://github.com/timberio/timber-ruby/compare/v2.2.2...v2.3.0
 [2.2.2]: https://github.com/timberio/timber-ruby/compare/v2.2.2...v2.2.3
 [2.2.2]: https://github.com/timberio/timber-ruby/compare/v2.2.1...v2.2.2

lib/timber/version.rb

@@ -1,3 +1,3 @@
 module Timber
-  VERSION = "2.3.0"
+  VERSION = "2.3.1"
 end