Making columns to be ignored on update a configuration

[jpcamara]

It's nice that created_at and created_on are being ignored on updates, but it'd be even nicer if it could be expanded to encompass a user specified list of columns 😄

Has any thought been put into this before? I have some fields that are required on insert, but don't need to be continually updated past that point (and don't change after insertion).

[pnomolos]

This is earlier, but a dup of #51 and since the conversation's there I'm closing this :)