ignore .gopack, and install test packages with -race
rename hypermedia.Rels() => hypermedia.NewRels()
add hypermedia.Rels()
don't add a response object's relations to the response

use Rels(resource) to get the relations for a resource,
whether it’s a Response or the result struct.
make this compatible with go 1.1
merge functional-rels
don't bother trying to encode or decode the resource too
add a hypermedia helper to fill rels
re-arrange hypermedia file
add a specific rels cache

also fix an issue where repeat memory cacher reads need
to reset the buffer position
change cacher interface to take sawyer.Request instead