Update changelog

The changelog wasn't updated for each release.

This patch updates the changelog, with changes
taken from the releases page

Signed-off-by: Sebastiaan van Stijn <[email protected]>

Author: thaJeztah

CHANGELOG.md

@@ -4,14 +4,32 @@ This changelog tracks the releases of docker-credential-helpers.
 This project includes different binaries per platform.
 The platform released is identified after the tag name.
 
+## v0.5.1
+
+- Redirect credential helpers' standard error to the caller's
+- Prevent invalid credentials and credentials queries
+
+## v0.5.0 (Mac OS X)
+
+- Add a label for Docker credentials and filter credentials lookup to filter keychain lookups
+
+## v0.4.2 (Mac OS X, Windows)
+
+- Fix osxkeychain list
+- macOS binary is now signed on release
+- Generate a `.exe` instead
+
+## v0.4.1 (Mac OS X)
+
+- Fixes to support older version of OSX (10.10, 10.11)
+
 ## v0.4.0 (Go client, Mac OS X, Windows, Linux)
 
 - Full implementation for OSX ready
 - Fix some windows issues
 - Implement client.List, change list API
 - mac: delete credentials before adding them to avoid already exist error (fixes #37)
 
-
 ## v0.3.0 (Go client)
 
 - Add Go client library to talk with the native programs.