Code cleaning.

pom.xml

@@ -310,16 +310,6 @@
 	    </resource>
     </resources>
 
-		<!-- TODO: remove?
-    <extensions>
-	    <extension>
-	      <groupId>org.apache.maven.wagon</groupId>
-	      <artifactId>wagon-ssh</artifactId>
-	      <version>2.6</version>
-	    </extension>
-    </extensions>
-    -->    
-
 	</build>
 
 	<distributionManagement>

src/main/java/uk/ac/ebi/utils/opt/io/IOUtils.java

@@ -54,6 +54,9 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.PipedInputStream;
+import java.io.PipedOutputStream;
 import java.io.Reader;
 import java.io.StringReader;
 import java.io.UncheckedIOException;
@@ -67,14 +70,18 @@
 import java.nio.file.Path;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
+import java.util.concurrent.Executor;
+import java.util.concurrent.ExecutorService;
 
 import org.apache.commons.io.input.ReaderInputStream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.google.common.io.Resources;
+import com.machinezoo.noexception.Exceptions;
 
 import uk.ac.ebi.utils.exceptions.UncheckedFileNotFoundException;
+import uk.ac.ebi.utils.threading.HackedBlockingQueue;
 
 
 
@@ -448,4 +455,5 @@ public static URL url ( String urlStr )
 			);
 		}
 	}
+
 }