- 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
- What's the correct way to change logLevel as an end user?
    - mermaid.initialize({ logLevel: 1 })
- Fix CodeClimate
- Get familar with jison
- add coveralls
- git graph requires a blank line at the end. why?
- Move cli to mermaid-cli project ?
- remove 'fs' as dependency
- remove 'lodash' as dependency