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 # [QuGradLab](README.md) Change Log
 
+## Release 0.2.0
+
+- Added `SpinChain` within the rotating wave approximation: `systems.semiconducting.esr.rotating_wave_approximation.SpinChain`. The interface is the same as `systems.semiconducting.esr.SpinChain`.
+- Updated the GitHub actions:
+    - `actions/checkout@v4` -> `actions/checkout@v7`
+    - `actions/setup-python@v5` -> `actions/setup-python@v6`
+    - `actions/upload-artifact@v4` -> `actions/upload-artifact@v7`
+    - `actions/download-artifact@v4` -> `actions/download-artifact@v8`
+
+This release supports the article:
+
+> Henrik Gothen, Christopher K. Long, Djamila Hiller, Yunming Qian, Crispin H. W. Barnes, Normann Mertig, and David R. M. Arvidsson-Shukur. Pulse-optimised circuit elements for scalable and noise-resilient quantum chemistry. 2026. doi: https://doi.org/10.48550/arXiv.2606.17357. arXiv: 2606.17357 [quant-ph]
+
+### New contributor
+
+- Henrik Gothen
+    - https://github.com/hgothen
+    - https://orcid.org/0009-0006-3764-4805
+
 ## Release 0.1.2
 
 ### Bug fixes