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+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* The `PersesAtomMapper` now uses openff.units inline with the rest of the package.
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>