improve changelog entry on pyeda -> sympy
@@ -34,7 +34,8 @@ Changed
- Improve `mct`'s `'basic'` mode by using relative-phase Toffoli gates to build intermediate results.
- Adapt to Qiskit Terra's newly introduced `Qubit` class.
- Prevent `QPE/IQPE` from modifying input `Operator`s.
-- The PyEDA dependency was removed.
+- The PyEDA dependency was removed;
+ corresponding oracles' underlying logic operations are now handled by SymPy.
Fixed
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