- Upgrade d3 to version 4
- Use external d3-textwrap library
    - Problem is it's for d3 v4 only
- Make node console output colors like Chrome console
- Don't version control generated content, move them to outside project
    - editor
    - docs
- What's the correct way to change logLevel as an end user?
- d3 v3 doesn't support 'use strict'
    - babel-plugin-transform-remove-strict-mode
        - need to remove it after upgrading to d3 v4
- rewrite live editor
- Fix CodeClimate
- What is live-server ?
- Get familar with jison
- How to generate doc?
- webpack warning: lodash too big
- add converalls
- git graph requires a blank line at the end. why?