[Stable] Release 0.2.1

[ElePT]

Summary

0.2.1 release with untyped form of qiskit_algorithms (not to break typed dependent packages).

Details and comments

[coveralls]

Pull Request Test Coverage Report for Build 6172477376

• 170 of 182 (93.41%) changed or added relevant lines in 45 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 90.516%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
qiskit_algorithms/eigensolvers/numpy_eigensolver.py	5	6	83.33%
qiskit_algorithms/optimizers/adam_amsgrad.py	0	1	0.0%
qiskit_algorithms/optimizers/aqgd.py	1	2	50.0%
qiskit_algorithms/optimizers/gradient_descent.py	6	7	85.71%
qiskit_algorithms/optimizers/spsa.py	4	5	80.0%
qiskit_algorithms/optimizers/umda.py	2	3	66.67%
qiskit_algorithms/phase_estimators/phase_estimation_result.py	1	2	50.0%
qiskit_algorithms/amplitude_amplifiers/grover.py	3	5	60.0%
qiskit_algorithms/minimum_eigensolvers/diagonal_estimator.py	7	10	70.0%

Totals
Change from base Build 6143495221:	0.5%
Covered Lines:	6452
Relevant Lines:	7128

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💛 - Coveralls