Cannot use refs in the same document

[jgresty]

Using a schema with a ref in it that points to the same document fails with the error

failed to load spec versions: failed to load resource at "the/schema/location": failed to localize refs: map key "components" not found

An example ref would be:
$ref: '#/components/schemas/Foobar'
a workaround is changing the ref to point to the current file, ie:
$ref: ./foo.yaml#/components/schemas/Foobar

[cmars]

I'm really surprised this didn't work! I'll add a test case and work with it. Very strange...