Handle circular references

[emahuni]

This handles circular references cloning, still working on tests, but it works.

[aaronlippold]

This will help our team quite a bit. Thanks and can't wait until this is merged

[Dallas62]

Hi,

This PR add dependencies to lodash.

I don't think it's required. Also, I chose this library to avoid this kind of dependencies.

cloneArrayDeep is merged into cloneObjectDeep, benchmark might be required before merge.

Regards,

[emahuni]

Hi,

This PR add dependencies to lodash.

I don't think it's required. Also, I chose this library to avoid this kind of dependencies.

cloneArrayDeep is merged into cloneObjectDeep, benchmark might be required before merge.

Regards,

You are correct about dependencies, I also worry about that, but it's not the entire lodash lib. I didn't add the whole lib, just what was needed. For this reason there is then a room for improvement, but that's the concept overall.

[jonschlinkert]

If someone is interested in updating this PR without lodash, I'd be happy to merge it in.