plainOnly feature

[dangreen]

This option is prevent to change keys in non-plain objects.
For example: this breaks Moment.js object, with this option - all ok.

[zquancai]

I have this problem also.
I have a Unit64 object, like then follow one

then I use camelizeKeys to convert it, the result is:

It is terrible.
Why didn't the author merge it? @domchristie , might we can provide a config for it.

[prawn-cake]

Are there any obstacles to merge this?