Update CHANGELOG for the 2025.1.0 release.

Author: lohedges

doc/source/changelog.rst

@@ -9,6 +9,15 @@ company supporting open-source development of fostering academic/industrial coll
 within the biomolecular simulation community. Our software is hosted via the `OpenBioSim`
 `GitHub <https://github.com/OpenBioSim/biosimspace>`__ organisation.
 
+`2025.1.0 <https://github.com/openbiosim/biosimspace/compare/2024.4.1...2025.1.0>`_ - Jul 01 2025
+-------------------------------------------------------------------------------------------------
+
+* Improved robustness of formal charge inference when reading molecules from PDB or SDF files (`#393 <https://github.com/OpenBioSim/biosimspace/pull/393>`__).
+* Make sure the system extracted from AMBER trajectory frames during free-energy perturbation simulations are in the original, unsquashed format (`#403 <https://github.com/OpenBioSim/biosimspace/pull/403>`__).
+* Add support for the ``ff19SB`` force field and OPC water (`#406 <https://github.com/OpenBioSim/biosimspace/pull/406>`__).
+* Allow creation of ``SOMD`` perturbation files without modification to ghost atom bonded terms (`#407 <https://github.com/OpenBioSim/biosimspace/pull/407>`__).
+* Support analysis of ``SOMD2`` energy trajectories with time varying lambda sampling (`#408 <https://github.com/OpenBioSim/biosimspace/pull/408>`__).
+
 `2024.4.1 <https://github.com/openbiosim/biosimspace/compare/2024.4.0...2024.4.1>`_ - Feb 14 2025
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