Tweak `max`, `min`, and trim helper comments. [ci skip]
Cleanup `isObject` and `isRegExp`.
Add `/` to characters escaped by `escapeRegExp`.
Simplify `defaults`.
Make `merge` align with `assign` exit early snippet.
Ensure `transform` checks that `object` is an object before using it as the `accumulator` `[[Prototype]]`.
Add Underscore build of `escapeRegExp` update.
Fix doc typos `fourty` to `forty`. [ci skip]