These crates may be used to inspect and validate the internal state of Filecoin Actors.
For the smart-contracts, see: https://github.com/filecoin-project/builtin-actors
NOTE: The code in actors/ and fil_actors_shared/ is copy-pasted from the above repository.
Therefore, it's advised to avoid refactoring such code in order to facilitate a smoother version
upgrade process and potentially automate it. fil_actor_interface/ can be modified according to
project's needs.