bump diff to >= 3.5.0

[paulschreiber]

Addresses WS-2018-0590 kpdecker/jsdiff@2aec429

[C-Lodder]

4.0.1 is being used in https://github.com/C-Lodder/grunt-postcss/blob/master/package.json#L30

[paulschreiber]

@C-Lodder updated patch to 4.0.1

[C-Lodder]

@paulschreiber this repo is completely abandoned. I actively maintain a fork which has all dependencies updated. Feel free to use it

https://github.com/c-lodder/grunt-postcss

[paulschreiber]

@C-Lodder Can you take over the name on npmjs.org? Can the original author release it / will npm give it to you?

[C-Lodder]

It's not just the name that would be needed. You can just use the fork like others are starting to do now