Make lodash dependency more granular

[Richard Viney]

Hi,

The dependency on lodash increases the bundle size of consuming applications. Could we switch to the packages for the individual lodash functions to lodash.intersection, lodash.difference etc.?

The update process is fairly trivial, would be happy to do a PR for it.

Thanks.

[Bill Gao]

thanks, @richard-viney a PR would be great

[Richard Viney]

PR submitted: #12

[Richard Viney]

If you had a moment to review & merge #12 and then do a release that would be greatly appreciated 👍.