upgrade to v6.x + lib from npm

[rkristelijn]

New version is out, no need to fetch through cdn anymore

npm i dhx-suite

or

yarn add dhx-suite

https://github.com/rkristelijn/react-dhx

[VallyPepyako]

@rkristelijn anyway, you can still use CDN in some cases it could be helpful for speed increasing.