«DeprecationWarning: Buffer()» in node v10.x

[ivan-nginx]

[stevenjoezhang]

https://github.com/theme-next/hexo-theme-next/pull/599/files
Not solved?

[ivan-nginx]

OMG, my fault. I was on v6.x branch. In v7.x (master branch) already solved.

[stevenjoezhang]

Maybe we should fix this in v6x branch, using Buffer.from instead of Buffer?

[ivan-nginx]

Because in #599 pull label v6.x exists, I'll merge this pull before releasing. Don't worry about it.