Migration to 5 version D3

[retyui]

Remove .npmignore used package.json -> files (check result npm pack)
Update D3 version to latest
Did the formatting eslint --fix

[retyui]

#155

[codesuki]

That was quick! Thanks for the PR. Please let me check it on monday, I am away for the weekend. Thanks again!

[retyui]

replace schemeCategory20 => schemeCategory10

D3 no longer provides the d3.schemeCategory20* categorical color schemes

[retyui]

There are still many problems, I now understand what this method does

https://github.com/codesuki/react-d3-components/blob/master/src/StackDataMixin.jsx#L26-L52

[codesuki]

Is this PR still WIP?
If you need me to explain any part of the code, let me know!

[retyui]

@codesuki Yes, this PR still work in progress.
In the near future I will try to end the migration

[retyui]

@codesuki
I almost finished left the most difficult for me : this is a change for d3.stack StackDataMixin.jsx#L27-L39
mentioned by @PierreGUI #133 (comment)

Fast check result

git clone https://github.com/retyui/react-d3-components -b d3-version-5
yarn
yarn watch

And open: http://localhost:3000/example/d3-v5/

[codesuki]

Great! I'll have a look later today. Thanks!

[retyui]

@codesuki Well, what do you say?

[codesuki]

Sorry, in the middle of release preparations. I'll need a few more days until I have time to check it out.

[codesuki]

What happened?

[retyui]

Do not worry, I want to do everything in stages. Multiple steps for migration

[retyui]

@codesuki
This is a list of changes that need to be made so that migration is as productive as possible:

1. Add lint-staged, prettier, update webpack to latest version
2. Add test for components
3. Replace mixins to hocs
4. Migrate to d3 version 5
   Do you agree with these changes?

[codesuki]

Yes that is a reasonable list. Step 3 is mostly useful for React upgrades, but super useful.