Bumps ws to latest version and replaces babel for esm

[OmgImAlexis]

Since this doesn't include any tests I used the example/simple.js to verify it still works with the new version.

I've also replaced babel with esm in this meaning no more compiling just to add import/export support.

For now to use this run either of these and you'll be good to go.

$ npm install https://github.com/OmgImAlexis/express-ws
$ yarn add https://github.com/OmgImAlexis/express-ws

Replaces https://github.com/HenningM/express-ws/pull/95 Closes https://github.com/HenningM/express-ws/issues/90

[OmgImAlexis]

@HenningM any chance this could be reviewed soon?

[OmgImAlexis]

@HenningM could you please have a look at this.

[OmgImAlexis]

@HenningM sorry for the constantly pinging but this is something that's affecting me everyday at work.

As it seems you're still busy I'd like to offer taking over maintaining this for you until you're free enough to come back.

[HenningM]

Hi @OmgImAlexis,

First of all: my sincere apologies for not getting to this PR sooner. Unfortunately I haven't been able to give this project the attention it deserves lately. I'll do my best to improve the situation in the coming weeks and months, but I'm also open to the idea of inviting someone else to (co-)maintain this.

The changes in the PR look good to me at first glance, but I'll need to have a closer look before I can merge & release this. I'll get back to you tomorrow evening (UTC).

[OmgImAlexis]

No worries. Thanks for getting back to me.

[OmgImAlexis]

@HenningM would you mind publishing a new version to npm? The last published version is 5 months old.

[safareli]

@HenningM can you please publish new version on npm?