added void:Dataset type to bio2rdf.org/dataset_vocabulary:Endpoint
added void:dataset type to dataset partition
finished adding void:propertyPartition [void:property <uri>; void:entities ''] to predicate literal counts
fixed void:propertyPartition [void:property <uri>; void:entities ''] to predicate literal counts
finished adding void:classPartition to write_type_counts
finished adding void:propertyPartition to write_predicate_object_counts
finished adding void:propertyPartition to write_predicate_object_counts
Merge pull request #332 from micheldumontier/release3

chembl hotfix on variable name
Merge remote-tracking branch 'upstream/release3' into statistics-void-fix
added get unique literal count
added isIRI filter to get unique_object_count
added write_unique_literal_count
minor fix to get number of unique literals
added single quotes to password
added get_distinct_predicate_frequency
added write_distinct_entities
removed spaces
added get distinct types and their frequencies
added distinct restriction
added predicate distinct object
fixed write_predicate_literal counts