* Improve state endpoint genesis test and cover cases when accounts, code and slots doesn't exist.
* Refactor state endpoints to support returning partial proofs.
* Implement getProofs in state endpoints.
* Add tests for getProofs and improve code.
* Implement eth_getProof JSON-RPC api in Fluffy.
* Return default values when account, slot or code doesn't exist.
* Handle case when storage doesn't exist due to account not existing or being a non contract account.
* Update state network to use addressHash instead of address in contract trie and contract code content keys.
* Fix path calculation bug in getParent when working with extension nodes.
* Bump portal spec tests repo.
* Finish updating tests due to portal test vector changes.
* Update Fluffy state bridge to use addressHash.
* Update Fluffy book with correct commands for running portal hive tests.
* Started implementation of state endpoints.
* Add rpc calls and server stubs.
* Initial implementation of getAccountProof and getStorageProof.
* Refactor validation to use toAccount utils functions.
* Add state endpoints tests.