* Set up framework for sending transaction with correct args and nonce mutex locking
* Set up printing ethereum address through emintkeys and getting chainid from flags
* Implemented defaults for eth_sendTransaction
* Fix bug with no data provided
* Updated comments and error, as well as RLP encoded tx bytes for return instead of amino encoded
* Set up personal account api for personal sign
* Added unlocking key functionality and attach to eth rpc
* Implemented eth_sign
* Transform V in sig based on yp and fix bug
* Fix lint issue
* Remove escape character from comment
* Switch error handling to panic on invalid unlocked key
