hardhat-ethers v2.0.3

This release fixes an issue (#1247) with hardhat-ethers, where the provider wasn't correctly reset after hardhat_reset was called.

It also adds a better inspection result for ethers's BigNumber instances (issue #2109). So now if you evaluate a BigNumber in the console, the result will look like this:

> ethers.BigNumber.from(1000)
BigNumber { value: "1000" }