enable strictures

modules/Bio/EnsEMBL/IO/Object/Metadata.pm

@@ -33,6 +33,9 @@ base class.
 
 package Bio::EnsEMBL::IO::Object::Metadata;
 
+use strict;
+use warnings;
+
 sub new {
 
     die "Bio::EnsEMBL::IO::Object::Metadata should not be directly instantiated!";

modules/Bio/EnsEMBL/Utils/RDF.pm

@@ -34,6 +34,8 @@ limitations under the License.
 
 package Bio::EnsEMBL::Utils::RDF;
 
+use strict;
+use warnings;
 use parent 'Exporter';
 our @EXPORT_OK = qw(u triple escape clean_for_uri taxon_triple prefix name_spaces compatible_name_spaces seq_region_uri feature_uri);
 our %EXPORT_TAGS = (all => [qw(u triple escape clean_for_uri taxon_triple prefix seq_region_uri feature_uri)],