TASK: Add changelog for 4.0.6

See https://jenkins.neos.io/job/neos-release/143/

Documentation/Appendixes/ChangeLogs/406.rst

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+`4.0.6 (2018-06-26) <https://github.com/neos/neos-development-collection/releases/tag/4.0.6>`_
+==============================================================================================
+
+Overview of merged pull requests
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+`DOCS: Add accept option to Asset- and Image-Editor  <https://github.com/neos/neos-development-collection/pull/2093>`_
+----------------------------------------------------------------------------------------------------------------------
+
+Documenting the new `accept`-option.
+
+See: https://github.com/neos/neos-ui/pull/1900
+
+* Packages: ``Neos``
+
+`TASK: Fix sorting icon <https://github.com/neos/neos-development-collection/pull/2040>`_
+-----------------------------------------------------------------------------------------
+
+null
+
+* Packages: ``Browser``
+
+`TASK: Fix documentation for inline.editorOptions <https://github.com/neos/neos-development-collection/pull/2073>`_
+-------------------------------------------------------------------------------------------------------------------
+
+The former`aloha` things need to go under `formatting` and have a new format.
+
+* Packages: ``Browser`` ``Neos``
+
+`BUGFIX: Make sure to materialize as few nodes as possible <https://github.com/neos/neos-development-collection/pull/2085>`_
+----------------------------------------------------------------------------------------------------------------------------
+
+For property changes there is no necessity to materialize
+auto-created child nodes as well. In projects with deeply
+nested auto-created node structures this behaviour could
+quickly generate huge amounts of changed nodes therefore
+we should only materialize child nodes for structural
+changes.
+
+All of this is only valid for workspace materializations though,
+in case dimensions need to be materialized as well, we need to
+materialize all child nodes as well for consistency.
+
+`BUGFIX: On asset change flush entries tagged with AssetDynamicTag <https://github.com/neos/neos-development-collection/pull/2082>`_
+------------------------------------------------------------------------------------------------------------------------------------
+
+When using `registerAssetChange()` provided by `ContentCacheFlusher` not all affected
+cache entries would always be flushed. This adds flushing of entries tagged `AssetDynamicTag_*`
+as done through `ConvertUrisImplementation`–`Runtime`–`RuntimeContentCache` to solve
+this.
+
+`BUGFIX: Prevent stale object references in user runtime cache <https://github.com/neos/neos-development-collection/pull/2084>`_
+--------------------------------------------------------------------------------------------------------------------------------
+
+Holding a reference to an doctrine object can be dangerous
+if something happens to the UOW during that time, so that
+a new instance of the entity is produced, resulting in a
+stale entity reference that must be considered detached.
+We therefore should only cache the persistence identifier of
+a user for easier retrieval. If said user was already loaded by
+doctrine it will be available in the identity map and should not
+trigger another query, making this not less efficient than the
+original solution.
+
+Additionally refactored so that the cache is flat.
+
+`BUGFIX: Avoid duplicate results and respect filter in NodeSearchService <https://github.com/neos/neos-development-collection/pull/2087>`_
+------------------------------------------------------------------------------------------------------------------------------------------
+
+Moves the "search by node id" logic from the `NodesController` to the
+`NodeSearchService` fixing the following regressions:
+
+* Duplicate results will be filtered
+* Respect `$searchableNodeTypeNames` argument
+* Don't execute `getNodeByIdentifier()` twice for every search
+
+Fixes: #2079
+Related: #1894
+
+* Packages: ``Browser`` ``Neos``
+
+`Detailed log <https://github.com/neos/neos-development-collection/compare/4.0.5...4.0.6>`_
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~