Use `arrayEach` for `baseClone`, `baseMerge`, and `transform`.
Ensure `resolver` provided to `_.memoize` is a function if  it's truthy.
Add more tests for `null` `thisArg` arguments.
Rebuild dist.
Make `_.where` work with empty sources.
Use `matched` instead of `found` in docs. [ci skip]
Update vendor/underscore and underscore tests.
Update other vendors.
Add `_.findWhere` as its own method.
Excuse invalid underscore `_.intersection` tests.