Updated versions from 4.0.0-incubating to 4.0.1-incubating-SNAPSHOT
removed release-specific tag information in <scm> section
METAMODEL-33: Limited the exclusion of rat plugin. Added license headers
to integrationtest classes.
METAMODEL-32: Fixed thread safety of XlsxSpreadsheetReaderDelegate
METAMODEL-34: Removed non-bundled dependencies' licenses from LICENSE
file