4.1.0 with supportsColor breaks testing on node < 4

[Yeti-or]

I am complaining because sinon supports old node.js, it's written in package.json https://github.com/sinonjs/sinon/blob/master/package.json#L95

Okay, I understand that it is not mainstream, but I have a package that should be working on old env.
And everything was okay until release of 4.1.0.

But than supports-color was added: https://github.com/sinonjs/sinon/pull/1583/files#diff-dab05c918e781b4a65cc1fdbcdc6a7aaR3

Some options we could do:

• drop support of old node.js, because as I see in .travis.yml you are not testing on it anyway
• remove supports-color from dependencies
  and put necessary code from supports-color to lib/sinon/color.js
• try to convince supports-color, to switch from const && let, to var but actually I am not believing in this option =/

Sinon version : 4.1.0

What did you expect to happen?
tests on node 0.12.0 works

What actually happens
no they not

[mantoni]

The "engine" field in the package.json file is outdated and should be removed or corrected. The Sinon.js documentation page has a compatibility section wich states that Node 4 is the minimum requirement: http://sinonjs.org/releases/v4.1.0/

If you need Sinon on Node 0.12 please use Sinon 1.x. We require Node 4 since Sinon 2.