Merge OS 4.1 into OS 4.3

Corrected changelog
Corrected irs-demo cordapp build.gradle file - removed unnecessary dependency

feel free to be detailed.

docs/source/changelog.rst

@@ -4,10 +4,8 @@ Changelog
 Here's a summary of what's changed in each Corda release. For guidance on how to upgrade code from the previous
 release, see :doc:`app-upgrade-notes`.
 
-.. _changelog_v5.0:
-
-Version 5.0
------------
+Unreleased
+----------
 
 * Introduced a new low level flow diagnostics tool: checkpoint agent (that can be used standalone or in conjunction with the ``dumpCheckpoints`` shell command).
   See :doc:`checkpoint-tooling` for more information.
@@ -42,11 +40,6 @@ Version 5.0
 
   .. note:: This is only best-effort and there are no guarantees of reliability.
 
-.. _changelog_v4.2:
-
-Version 4.2
------------
-
 * Contract attachments are now automatically whitelisted by the node if another contract attachment is present with the same contract classes,
   signed by the same public keys, and uploaded by a trusted uploader. This allows the node to resolve transactions that use earlier versions
   of a contract without having to manually install that version, provided a newer version is installed. Similarly, non-contract attachments
@@ -55,8 +48,10 @@ Version 4.2
 * :doc:`design/data-model-upgrades/package-namespace-ownership` configurations can be now be set as described in
   :ref:`node_package_namespace_ownership`, when using the Cordformation plugin version 4.0.43.
 
-Unreleased
-----------
+.. _changelog_v4.1:
+
+Version 4.1
+-----------
 
 * Fix a bug in Corda 4.0 that combined commands in ``TransactionBuilder`` if they only differed by the signers list.  The behaviour is now consistent with prior Corda releases.
 

samples/irs-demo/cordapp/workflows-irs/build.gradle

@@ -15,9 +15,6 @@ dependencies {
     // Corda integration dependencies
     cordaCompile project(':core')
     
-    // only included to control the `DemoClock` as part of the demo application
-    // normally `:node` should not be depended on in any CorDapps
-    cordaCompile project(':node')
 
     compile("com.fasterxml.jackson.module:jackson-module-kotlin:$jackson_version")