* removed old json-tests
* simplify folds in triehash.rs
* removed unused json_aid
* removed unused squeeze.rs
* json branching tests for trie
* removing todos from util
* separated UsingQueue and Table
* further cleanup, removing unused code
* serde serialization of hash moved to rpc module
* uint wrapper for rpc in progress
* serialization of uint moved to rpc module
* updated eth-secp256k1
* updated igd, serde is no longer dependency of util
* loading trie consensus tests
* renamed aliases in rpc imports
* Splitting methods requiring signing into separate trait
* Single place where RPC apis are created.
* Separating eth_filter
* Separating eth_signing
* Stubs for Personal Signer methods
* Test for EthSigningQueueClient
* TransactionConfirmation API
* Exposing PersonalSigner API
* Defining ApiSets dependent on context
* Removing types
* Supporting sending notification to WS connected SystemUIs
* Sending a notification on every new messages
* Adding logs to signing queue
* Shutting down broadcaster
* Refactoring the signing queue
* Fixing wait loop in case of spurious wake-ups.