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