Update for React 17.x

[MSt1ch]

Hello,

We are very appreciated to you for that exciting library. And we hope you will update it for new React 17.x and remove all unsafe methods like componentWillReceiveProps and so on.
Please let me know what would you do with your library.
Thanks and have a good day.

[ghana7989]

I can work on it.
Moderators just assign that to me.
Happy to contribute

[YuriGor]

Hi @ghana7989 you could fork this repo and make your own,
let's say 'react-stack-grid-17' or whatever and then create new issue in this repo with a link to the fork.
If maintainer will suddenly appear, but I don't think he will, you could negotiate to merge your fork back here in exchange of making you maintanier.