first stab at eip155:0 lang in eip155/caip2.md#153

bumblefudge wants to merge 3 commits intomainChainAgnostic/namespaces:mainfrom

feat/eip155-caip2.md-add-chainid-0-semanticsChainAgnostic/namespaces:feat/eip155-caip2.md-add-chainid-0-semanticsCopy head branch name to clipboard