Jordan Bae

@felixxm I reflected your feedback. I try to refactor the existing code.

@felixxm When you have time, please review this :)

@jacobtylerwalls could you know me how to keep the 'Need...' flags? 

@jacobtylerwalls Big Thanks!!

@jacobtylerwalls I think i seem to miss something.(to receive review) If you know about this, please let me know.

@felixxm Sorry I didn't rush you. It was my first time to open source, so I misunderstood because I didn't know the process well! Thank you for your answer!!

@nessita Hi ~! sorry for late response. i think it's hard to keep this PR. You can close this. i will try to make new PR when i have a...

@vitalik Hi! Could i look into this issue? this issue is still valid?

@vitalik Thanks! I just ask this because this issue has `help wanted` tag. If there is any issue i can contribute, please share!