From 0502513702960d6f524a7a54ea8fb0bcd0190953 Mon Sep 17 00:00:00 2001
From: Daniel Hutzschenreuter <daniel.hutzschenreuter@ptb.de>
Date: Fri, 12 May 2023 07:59:09 +0000
Subject: [PATCH] Update CHANGELOG.md

---
 CHANGELOG.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3b1f7f..6532b98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+## 2023-05-12
+
+* Added feature si:quantityTypeQUDT (identification of kinds of quantities)
+* Extended and improved structures for representation of measurement uncertainties
+* Added feature si:standardMU (standard measurement uncertainty)
+* Added feature NaN values (placeholders)
+* Added unit operator /per 
+* Improved documentation of k value and distribution usage
+* Added feature si:significantDigit
+* Cleaned up XSD
+
+* Update of Wiki with page providing all unit identifiers [>> units Wiki](wiki/doc/UnitSystem.md)
+
 ## 2022-11-30
 
 * Update of units representation system with new SI prefixes and dimension one units
-- 
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