add rdf:dirLangString, rdf:reifies, rdf:Proposition, and modify rdf:JSON

[domel]

This PR updates http://www.w3.org/1999/02/22-rdf-syntax-ns#. It modifies the Turtle file and changes from v1.1 to v1.2.

Added

• rdf:dirLangString
• rdf:reifies,
• rdf:Proposition

Modified

• rdf:JSON

[niklasl]

This looks good.

I presume we're making this repository the official source of this vocabulary? If this is correct I gladly welcome it.

I just have one wish for that: to first commit the original (the turtle as served on the official IRI), and then commit these changes upon that. To make it clear exactly what we're adding/changing. (I.e. do a rebase so this change is shown as a distinct commit (or commits).)

(Also adding the rdfs: source as rdfs.ttl seems appropriate?)

[gkellogg]

I agree with @niklasl that we should start with a base which is based on the RDF 1.1 version of the RDF Vocabulary (and the RDFS Vocabulary, as well). We might also consider providing the namespace documents in different formats: The JSON-LD Namespace files generate Turtle, JSON-LD, and HTML versions of the JSON-LD vocabulary, and we could similarly do that for the RDF(S) vocabularies.

I would put rdf.ttl in an "ns" sub-directory, along with rdfs.ttl.

[niklasl]

Can this be on hold until #33 is merged, and then rebased upon that?

[domel]

@niklasl I closed this one temporarily. When ns directory will be merged I will create a new PR only with rdf:dirLangString, rdf:reifies, rdf:Proposition, rdf:JSON

[niklasl]

@domel Sounds great; thanks!