Lodash 4 compatibility (next)

[jgonggrijp]

This is #585 redone for the next branch.

Installing the packages seems to have altered dist/backbone-relational.js and dist/backbone-relational.js.map as a side effect (probably the build script). It was not clear to me whether this should be the case, nor whether the contents of dist should always reflect the latest version of the code.

What should have happened to those files? If necessary, I can add another commit, or change an earlier commit and force-push, or make a separate branch and submit a new PR.

[jgonggrijp]

@bpatram Thanks for merging!

[pombadev]

Any timeline of releasing this? Instead of waiting for v0.11.0 or v0.12.0, would you consider releasing it?
Our company decided to update lodash to v4 and ever since this has been simply a major pain for us.

Please don't take it in a wrong way. I'm not demanding a release, just politely asking.
Thanks.

[bpatram]

@pjmp @jgonggrijp I haven't actually been added to the NPM package owners yet; stand by.

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@PaulUithol Can you add me as an owner to the NPM package?

npm owner add bpatram backbone-relational (https://docs.npmjs.com/cli/owner)

[PaulUithol]

Hey, thanks for the ping - missed the email initially I think. Am traveling/don't have any dev on this machine, but there is an option to add 'maintainers' via npmjs.com - could you let me know if that works/is sufficient?