v0.2.1

What's Changed

• Feat/opcodes dynamic gas costs by @enitrat in #932
• feat: gas refund support by @enitrat in #935
• fix: deployed precompiles by @enitrat in #947
• Add coinbase, base fee and effective gas price by @ClementWalter in #944
• fix: remove returndata from exceptional halts by @enitrat in #945
• ci: add artifacts on release by @d-roak in #952
• feat: enable txs to address 0 by @enitrat in #951
• Serialize Stack, Memory and Environment by @ClementWalter in #953
• Feat/fix deployer by @Eikix in #950

Full Changelog: v0.2.0...v0.2.1