SimpleElasticsearchPersistentProperty now already checks for the correct type of score properties. Added unit tests for that. Also added unit tests for SimpleElasticsearchPersistentEntity rejecting more than one score property being present.
Additional non-null assertions on components that are required so that we can remove superfluous null checks.
A bit o formatting, Javadoc, missing @since tags and license headers.
Original pull request: #207.
5ddb46c435