Update to cimgen master

[tom-hg57]

• Update generated java files created by cimgen:
  • Fix generation of Float/Decimal as float classes, String/Date/DateTime/MonthDay as string classes
  • Fix and improve static java files, unify format with generated classes, add rdfid to BaseClass
  • Move XMLTest.java to java/utils/RdfReader.java, fix create/link attribute objects, add reading rdf:about
  • Improve logging in RdfReader, centralize logging in Logging class to make it easier to switch to real log4j logger
  • Add logging to generated classes
  • Add generation of getter functions, add RdfWriter
  • Add Main class, which simply reads files and writes one file as result
  • Add creation of constants, generating all namespaces in CimConstants.java
  • Remove unused imports from static and generated java files
  • Sort schema files and attributes to guarantee a stable order in the generated sources
  • Add generated-via-cimgen comment to the header of all generated files
• Adapt pom.xml to new Main class
• Add unit tests for reader and writer
• Bump version to 0.2.0