For versioning, follow the URI convention of using year and month as is done in the OWL, XSD, RDF, and RDFS namespaces, with http://purl.org/provone/2015/01/ontology# as the ProvONE namespace for version 1.0.
Update the following sections of the ProvONE specification:
- the header, including the release date, etc.
- the document status section
- Section 1. Introduction (really just formatting changes)
  - 1.1 relation to other standards
  - 1.2 Aspects covered by ProvONE
  - 1.3 Structure of this Document
  - 1.4 Namespaces (formatting and update the provone namespace)
- Section 2. ProvONE Conceptual Model Overview
  - change the class names, add classes, etc.
  - start updating the ProvONE Constructs table
Fix a minor SVG rendering issue on the hasLocation arrow that was rendering in the wrong direction.
Update the Workflow-related classes and properties.  Because of the number of cross-references throughout the specification, references to deleted or renamed classes or properties remain, but will be cleaned up as I work through the Trace and Data Structure-related classes and properties.
Merge branch 'master' of https://github.com/DataONEorg/sem-prov-ontologies