Adds CHANGELOG entry for #19

Also fixes a few other entries.

Author: weierophinney

CHANGELOG.md

@@ -2,6 +2,31 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
+## 1.0.0alpha4 - 2018-02-27
+
+### Added
+
+- Nothing.
+
+### Changed
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- [#19](https://github.com/zendframework/zend-expressive-authentication/pull/19)
+  removes `Zend\Expressive\Authentication\ResponsePrototypeTrait`; the approach
+  was flawed, and the various adapters will be updated to compose response
+  factories instead of instances.
+
+### Fixed
+
+- Nothing.
+
 ## 1.0.0alpha3 - 2018-02-24
 
 ### Added
@@ -23,7 +48,7 @@ All notable changes to this project will be documented in this file, in reverse
 ### Fixed
 
 - [#18](https://github.com/zendframework/zend-expressive-authentication/pull/18)
-  uses the ResponseInterface as a factory. This was recently changed in
+  uses the `ResponseInterface` as a factory. This was recently changed in
   [zend-expressive#561](https://github.com/zendframework/zend-expressive/pull/561).
 
 ## 1.0.0alpha2 - 2018-02-22
@@ -47,7 +72,7 @@ All notable changes to this project will be documented in this file, in reverse
 ### Fixed
 
 - [#17](https://github.com/zendframework/zend-expressive-authentication/pull/17)
-  adds the missing config provider component-installer config.
+  adds the missing config-provider zend-component-installer config.
 
 
 ## 1.0.0alpha1 - 2018-02-07