Prepare 2.6.1 release

  - Consolidate changes in CHANGELOG.md
  - Update version in mix.exs

Author: DavidAntaramian

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.6.1] - 2017-10-02
+
 ### Fixed
 
   - Fixed an error where `Timber.Integrations.PhoenixInstrumenter` would fail
@@ -63,7 +65,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
     `Timber.Integrations.PhoenixInstrumenter`. This will suppress log lines
     from being written for any controller/action pair.
 
-[Unreleased]: https://github.com/timberio/timber-elixir/compare/v2.6.0...HEAD
+[Unreleased]: https://github.com/timberio/timber-elixir/compare/v2.6.1...HEAD
+[2.6.1]: https://github.com/timberio/timber-elixir/compare/v2.6.0...v2.6.1
 [2.6.0]: https://github.com/timberio/timber-elixir/compare/v2.5.6...v2.6.0
 [2.5.6]: https://github.com/timberio/timber-elixir/compare/v2.5.5...v2.5.6
 [2.5.5]: https://github.com/timberio/timber-elixir/compare/v2.5.4...v2.5.5

mix.exs

@@ -9,7 +9,7 @@ defmodule Timber.Mixfile do
 
   @source_url "https://github.com/timberio/timber-elixir"
   @homepage_url "https://github.com/timberio/timber-elixir"
-  @version "2.6.0"
+  @version "2.6.1"
 
   # Project manifest for Mix
   #