Adds CHANGELOG entries for 0.5.2 and #29

Author: weierophinney

CHANGELOG.md

@@ -4,6 +4,41 @@ All notable changes to this project will be documented in this file, in reverse
 
 Versions 0.3.0 and prior were released as "weierophinney/problem-details".
 
+## 0.5.2 - 2018-01-10
+
+### Added
+
+- [#29](https://github.com/zendframework/zend-problem-details/pull/29) adds
+  the ability for the `ProblemDetailsMiddleware` to trigger listeners when
+  it catches a `Throwable` to produce a response. Listeners are PHP callables
+  and receive the following arguments, in the following order:
+
+  - `Throwable $error`: the throwable/exception caught by the
+    `ProblemDetailsMiddleware`.
+  - `ServerRequestInterface $request`: the request handled by the
+    `ProblemDetailsMiddleware`.
+  - `ResponseInterface $response`: the response generated by the
+    `ProblemDetailsMiddleware`.
+
+  Attach listeners using the `ProblemDetailsMiddleware::attachListeners()`
+  instance method.
+
+### Changed
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- Nothing.
+
 ## 0.5.1 - 2017-12-07
 
 ### Added