Updated WDTK version to 0.1.0
Release notes
Add module to create a library jar
Remove unnecessary import
Add profile to sign jars
Define relative path of parent POM file
Make Maven sign all created jars
Add configuration to sign source and javadoc jars
Add URL and SCM information to parent POM file
Change project URL to use MediaWiki page
Add developers
Add packaging of sources and javadoc
Add license file to jars
Merge pull request #48 from Wikidata/release-v0.1.0

Release v0.1.0
Updated version to 0.2.0-SNAPSHOT
Merge pull request #35 from Wikidata/datamodel-to-json

Datamodel to json
Fixed issue #53.
Exceptions in converting statements now should result in the statement
to be skipped and a debug message to be logged.
Debug message is now more readable and catches all exception types.
Changed exception handling.
The following exceptions are caught:
* JSONException
* IllegalArgumentException
Remove wrong test