Merge defaults with provided options

[noelblaschke]

Use default options so it is not longer required to pass protocols with a custom options object.

[JSteunou]

Please do not change EOL ;)

[noelblaschke]

@JSteunou Updated

[noelblaschke]

53 is not correct if you don't merge this change, too. Please also bump version <3

[JimiC]

@noelblaschke I can't see any benefit changing the code to your proposal. Can you elaborate the case where this is applicable?

[JSteunou]

53 is still correct because the actual code make it still optional.

About the benefit of this PR:

:-1:

1. This is API breaking, so will need a major release
2. WebSocket protocols are optional, this is just a default option to ease rapid development, but should certainly be set at you convenience

:+1:

1. I can imagine the frustration for some developers to lose the default protocols parameter when using options for the 1st time :(

[JimiC]

@JSteunou The alternative would be:

client: function(url, options = {}) {
        const ws = new WebSocket(url, options.protocols || VERSIONS.supportedProtocols());
        return new Client(ws, options);
    },

[JSteunou]

I guess this is less breaking. Just a little for those using protocols inside the Client object, but I don't think this happens. Good call @JimiC :+1:

[JSteunou]

@noelblaschke I fixed it through #57