0.20.0 Upgrade Instructions¶ Python SDK VS Code Extension INTERFACE CHANGES¶ num_qubits attribute removed from StatePreparation, and added to GaussianMixture. Enhancements¶ New error metrics available for StatePreparation - total variation, Hellinger and Bhattacharyya; see StatePreparation. Add a new function, ComputationalStatePreparation. See ComputationalBasisStatePreparation. Add a new function, GHZStatePreparation. See GHZStatePreparation Add a new execution building block - the Operators' Estimator. IDE Improvements¶ Automatic Registers Resolution: Individual qubits are automatically labeled, colored, and merged (when possible) according to their associated registers; see Automatic Registers Resolution.