Merge pull request argotorg#12801 from ethereum/cse-optimization

CSE optimization

Merge pull request argotorg#12682 from ethereum/setreleasedatefor0812

Set release date.

Merge pull request argotorg#12426 from ethereum/setDateFor0811

Set release date for 0.8.11

Merge pull request argotorg#12255 from ethereum/setReleaseDate

Sort changelog and set release date.

Merge pull request argotorg#12056 from ethereum/setReleaseDatefro089

Set release date.

Merge pull request argotorg#12035 from ethereum/setReleaseDate

Set release date.

Merge pull request argotorg#11763 from ethereum/basefee-hasOpcode

Allow basefee as Yul identifier for EVMVersion < london

Merge pull request argotorg#11566 from ethereum/prepare086

Prepare release of 0.8.6.

Merge pull request argotorg#11505 from ethereum/prepareChanegloge367

Sort changelog.

Merge pull request argotorg#11279 from ethereum/changelog084

Prepare changelog for 0.8.4.