License Namespace Discussion

[JohnVidler]

Born of discussion at CL2017.

The suggestion of the namespace 'license' with licensing details for the file.

The format would be as follows:

{
	"__version__":"1.0.0",
	"name":"GPL",
	"url":"http://...",
	"date":"..."
}

__version__ - The semver for this namespace
name - The name of this license used
url - An optional URL to the actual license text
date - When this license was applied, in ISO standard date format as per the main spec.