Changelog/20111001

= Changelog: Service Update October 1, 2011 =

Summary: Microdata compatibility, alignment with schema.org, examples, minor extensions, polishing


 * 1) Made GoodRelations fully usable in Microdata syntax.
 * 2) Added Microdata processing rules.
 * 3) Added a mapping to the most relevant schema.org classes Person, Organization, Product, Place, and Offer; and for the properties description, image, name, productID, and manufacturer.
 * 4) Added and improved many examples in Microdata, RDFa, and Turtle syntax.
 * 5) Added a rdfs:domain to gr:name and gr:description (important for Microdata scenarios).
 * 6) Added new sections to HTML - "Conceptual Overview" and "Microdata Usage".
 * 7) Fixed textual definitions of gr:billingIncrement, gr:width, gr:weight, gr:hasUnitOfMeasurement, gr:offers, gr:typeOfGood, gr:DeliveryModePickUp, and gr:BusinessEntityType.
 * 8) Fixed minor bug in the Stack Overflow links.
 * 9) Added disjointness axiom between gr:Brand and gr:ProductOrService.
 * 10) Added gr:vatID property for indicating the VAT ID of the gr:BusinessEntity.
 * 11) Added gr:taxID property for indicating the Tax / Fiscal ID of the gr:BusinessEntity.
 * 12) Added gr:License.
 * 13) Included gr:License in the rdfs:domain of gr:validFrom and gr:validThrough and updated the textual definition.
 * 14) Included gr:License in the rdfs:domain of gr:eligibleRegions and updated the textual definition.
 * 15) Included gr:License in the rdfs:domain of gr:eligibleDuration and updated the textual definition.
 * 16) Changed the rdfs:range of gr:eligibleDuration from gr:QuantitativeValueInteger to gr:QuantitativeValue.
 * 17) Removed the mutual disjointness axioms between gr:ProductOrService and gr:PaymentMethod, so that e.g. gift vouchers or coins can be both products and payment methods.