From 24221fa914140630bb71d088f6de9bc0a1a7c7de Mon Sep 17 00:00:00 2001
From: Timo Koch <timo.koch@iws.uni-stuttgart.de>
Date: Sat, 10 Sep 2022 18:56:31 +0200
Subject: [PATCH] [metadata] Add changelog entry

---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 575be1bb67..bd94e7c656 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,8 @@ that implement an empty cache (i.e. nothing is cached for the flux variables).
 
 - __Examples__: Extend the porenetwork_upscaling example to include non-creeping flow simulation in pore network. The example is able now to provide not only upscaled Darcy permeability but also Forchheimer permeability and coefficient (employed in Forchheimer equation).
 
+- __Json__: Dumux now ships a fixed version of `https://github.com/nlohmann/json` to read and write JSON files. Only the symbols in the namespace `Dumux::Json` are meant to be used with Dumux. In particular, this now exports the json tree structure. More features may be added in the future.
+
 ### Immediate interface changes not allowing/requiring a deprecation period:
 
 - __Experimental features__: All headers with experimental features have been moved into the folder `dumux/experimental`.
@@ -42,6 +44,8 @@ Then code possibly fails to compile. The fix is to implement the same caching co
 
 ### New experimental features (possibly subject to backwards-incompatible changes in the future)
 
+- __Meta data__: There is support for extraction of meta data in `dumux/common/metadata.hh`. The extracted features, might change in the future
+and we can't give any guarantee that the name of keys and values in the extracted meta data tree will be stable between releases.
 
 Differences Between DuMu<sup>x</sup> 3.5 and DuMu<sup>x</sup> 3.4
 =============================================
-- 
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