v2.1.1

What's Changed

• feat: optimize checksum_value by @BobTheBuidler in #43
• feat: accidental optimize via refactor woohoo by @BobTheBuidler in #46
• feat: use direct dict methods, no super by @BobTheBuidler in #49 and @BobTheBuidler in #50
• fix: mypyc issue compiling TYPE_CHECKING by @BobTheBuidler in #51
• fix: add mypy_extensions to deps by @BobTheBuidler in #45
• chore: include C files in source control by @BobTheBuidler in #44
• chore: refactor out EthAddressKey by @BobTheBuidler in #42
• chore: fix mypy errs by @BobTheBuidler in #48
• chore: silence sourcery warnings by @BobTheBuidler in #47

Full Changelog: v2.1.0...v2.1.1