v2.2.2 Support solc 0.8.28 features

What's Changed

• Update solidity-parser/parser to 0.19.0 by @cgewecke in #249
• Highlight need for Etherscan api keys in README and config examples by @cgewecke in #241
• Docs fix spelling issues by @nnsW3 in #242

New Contributors

• @nnsW3 made their first contribution in #242

Full Changelog: v2.2.1...v2.2.2