add releasenote

Qiskit · Aug 10, 2022 · f44dfe6 · f44dfe6
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commit f44dfe6
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diff --git a/releasenotes/notes/taper-performance-6da355c04da5b648.yaml b/releasenotes/notes/taper-performance-6da355c04da5b648.yaml
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+---
+features:
+  - |
+    The :meth:`~qiskit.opflow.Z2Symmetries.taper` has significantly improved
+    performance because intermediate data is simplified.