First version of a test suite for RDF*

Hi all,

as per my action assigned on our last call [1], I pushed a first version 
of a test-suite. The first goal is to provide a set of concrete examples 
of how RDF* implementations are expected to behave. An HTML rendering of 
that test-suite is available here:

https://w3c.github.io/rdf-star/tests/semantics/manifest.html

so that everyone can review, reference, and comment each of the test cases.

If "entail" sounds esoteric to you, think of the 2nd graph in each test 
case as a SPARQL* ASK query, which is expected to return TRUE (or FALSE, 
in the case of "not entail").

Coming next: a similar test suite for SPARQL*.

   best

[1] https://github.com/w3c/rdf-star/issues/40 
<https://github.com/w3c/rdf-star/issues/40>