IRI's
@elf-pavlik provided this link: https://tools.ietf.org/html/rfc3987.
My understanding from a skim of the spec: IRI's were created to expand URI's to be international by expanding the character set. There is an algorithm to create a URI from an IRI. A URI can be considered an IRI.
So, seems to me we should use IRI for all our current and future references to URI's. What do you all think? Especially Pavlik.