Initialial update of expansion algorithm.
Passing expansion tests.
Fix expansion when @set or @list includes @annotation. (reverse-merged from commit efc267a66a6d2ac2ea8f9c70ed075c1eaa13051e)
Update fromRDF implementation (really, just add back :useNativeTypes option to Context#expand_value.
Merge work from flattened-rdf branch
Use @default for default graph name in fromRDF.
Update Flattening algorithm.
toRDF
Fix error with circular term definitions.
Mark compact and frame specs pending an update.