✨ Allow ES6 classes

[marvinroger]

This stays ES5 compatible and allow usage of ES6 classes. See this link for the explanation.

Basically, this allow this smoother syntax:

const util = require('util')
const Scout = require('zetta-scout')

// "Old" syntax

const TestScout = function () {
  Scout.call(this)
}
util.inherits(TestScout, Scout)

TestScout.prototype.init = function (next) {
  next()
}

// "New" syntax

class TestScoutEs2015 extends Scout {
  init (next) {
    next()
  }
}

Both syntaxes still work with this PR.

[kevinswiber]

@marvinroger Should [null] here be [constructor.prototype]?

[marvinroger]

No, because the first element given to bind (the context) is overwritten by the new. See http://stackoverflow.com/a/35878917

[kevinswiber]

A-okay. Got it. 👌

[kevinswiber]

@AdamMagaluk This looks good to me. Any objection to merging? (Asking permission, because well... you know... it's complicated. 😉)

[AdamMagaluk]

LGTM. Sorry for the delay @kevinswiber and @marvinroger been busy with other projects this week. I hope to give all the other PRs a review in the next few days.

[kevinswiber]

@AdamMagaluk Your "delay" was 12 hours. Go easy on yourself. I've committed far more atrocious open source crimes. 😺

[marvinroger]

Don't worry, moreover we don't live in the same TZ (Europe/Paris for me) so there will be delay anyway. 😉

[marvinroger]

Thanks! Can you make a release?

[AdamMagaluk]

Doing it now.

[AdamMagaluk]

v0.8.0 Released.