Version 1.1.7.
Release 1.1.7

* RDF::Util::File:
  * now returns or yields a RemoteDocument, which is based on StringIO.
  * provides #base_uri, #content_type, #charset, #last_modified, #headers, #code, #content_encoding, #links, and #etag accessors.
  * base_uri always updated on 3xx redirect, previously did not for code 303.
  * If loaded, uses RestClient for retrieving remote resources rather than Net::HTTP. This allows for client-side caching if the rest-client-components gem is also loaded, and `RestClient.enable Rack::Cache` is set.
  * Added :verify_none option, which turns off SSL verification if set; previously, it was the default.
* Updated schema.org vocabulary definition to _venkman_/2.0.