AST/type/data analysis

[serapath]

@todo

• write AST/type/data analyser module to find compatible version range for type/data/...
• write AST/type/data analyser module to find a list of all dependencies in items
• write AST/type/data analyser module to find all items in the exact order they have been defined
  • Sort order of methods in generated JSON ABI ethereum/solidity#2731
• datdot-tcir#2 - AST/type/data import statement analysis and content hash replacement
• brainstorm about useful AST/type/data analyser modules and add them to this list
  • https://chriseth.github.io/notes/talks/trust_gap_meetup/#/16 bytecode metadata

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