ethers/v5.6.6 (2022-05-12 17:29)

• Ensure gas estimate errors are not call exceptions in disguise. (#2954; 2c3dae0)
• Added optimism to EtherscanProvider. (#2968; c6eebf9)
• Remove pedantic check for new keyword which broke some platforms for inheritance. (#2860, #2861; 32b7373)

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Embedding UMD with SRI:

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