swarm: release v0.4.2 (#1496)

* CHANGELOG: reflect latest merged PRs

* changelog: updated changelog for swarm 0.4.2

* version: mark 0.4.2 stable

CHANGELOG.md

@@ -1,4 +1,4 @@
-## v0.4.2 (Unreleased)
+## v0.4.3 (Unreleased)
 
 ### Notes
 
@@ -7,10 +7,21 @@
 ### Improvements
 
 ### Bug fixes
+
+## v0.4.2 (28 June 2019)
+
+### Notes
+
+This release is not backward compatible with the previous versions of Swarm due to changes to the wire protocol of the Retrieve Request messages. Please update your nodes.
+
+### Bug fixes and Improvements
+
+* [#1503](https://github.com/ethersphere/swarm/pull/1503): network/simulation: add ExecAdapter capability to swarm simulations
+* [#1495](https://github.com/ethersphere/swarm/pull/1495): build: enable ubuntu ppa disco (19.04) builds
+* [#1395](https://github.com/ethersphere/swarm/pull/1395): swarm/storage: support for uploading 100gb files
+* [#1344](https://github.com/ethersphere/swarm/pull/1344): swarm/network, swarm/storage: simplification of fetchers
 * [#1488](https://github.com/ethersphere/swarm/pull/1488): docker: include git commit hash in swarm version
 
-
-
 ## v0.4.1 (June 13, 2019)
 
 ### Improvements

version/version.go

@@ -21,10 +21,10 @@ import (
 )
 
 const (
-	VersionMajor = 0          // Major version component of the current release
-	VersionMinor = 4          // Minor version component of the current release
-	VersionPatch = 2          // Patch version component of the current release
-	VersionMeta  = "unstable" // Version metadata to append to the version string
+	VersionMajor = 0        // Major version component of the current release
+	VersionMinor = 4        // Minor version component of the current release
+	VersionPatch = 2        // Patch version component of the current release
+	VersionMeta  = "stable" // Version metadata to append to the version string
 )
 
 // Version holds the textual version string.