replace some of lodash with native functions

[live627]

• The recursive cloning methods were retained as their individual npm packages
• I tried replacing lodash.merge with Object.assign but some tests failed; seems the two methods may handle undefined differently
• Array.prototype.flat was introduced in NodeJS v11 so you'll need to drop v10 from the testing matrix
• is hasLength even used? The only reference to it seems unused

[novemberborn]

Thanks for this @live627. My spare-time-open-source efforts are currently focused on AVA but I'll keep this open.

[live627]

This got on my radar because it was amongst the largest dependencies of ava according to filesize.

…

On Mon, Oct 4, 2021 at 11:45 AM Mark Wubben ***@***.***> wrote: Thanks for this @live627 <https://github.com/live627>. My spare-time-open-source efforts are currently focused on AVA but I'll keep this open. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#78 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AADJNNZAWSF42OP5Q5N24Y3UFHY3PANCNFSM5E7KTHLA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[XhmikosR]

@novemberborn friendly ping :)

Not sure if this PR is good or not, but I'd love to see lodash removed from this package, assuming it doesn't need a lot of new code :)