Support array of layers for map.on

[stevage]

Currently you can do this:

    map.on('mouseenter', 'my-points', function(e) {...});

But if you want the same behaviour on multiple layers, you can't do it directly:

   var f = function(e) {
    ...
   };
    map.on('mouseenter', 'my-points', f);
    map.on('mouseenter', 'my-other-points', f);

It would seem reasonable to expect to be able to do:

    map.on('mouseenter', ['my-points', 'my-other-points'], function(e) { ... })`

[jfirebaugh]

See #4578 for why we elected not to support this.

[stevage]

Ok, thanks for the link.

[Stephane-Ag]

The documentation makes it seem like this is now a feature but it does not work for me. I have "mapbox-gl": "1.6.1".
What version was this introduced? Any link to a new PR with why it was eventually added?

[stevage]

@Stephane-Ag You are many major versions behind the latest release.

[Stephane-Ag]

@stevage I know that which is why I included my version. That answer does not help with either of my questions.