fix imports with new build

assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/Yurk_EspduReceiver.java

@@ -4,7 +4,7 @@ import java.io.*;
 import java.net.*;
 import java.util.*;
 
-import edu.nps.moves.dis7.*;
+import edu.nps.moves.dis7.pdus.*;
 import edu.nps.moves.dis7.utilities.*;
 
 /**

assignments/src/MV3500Cohort2019JulySeptember/homework4/Yurkovich/Yurk_EspduSender.java

@@ -4,11 +4,8 @@ import java.io.*;
 import java.net.*;
 import java.util.*;
 
-import edu.nps.moves.dis7.*;
+import edu.nps.moves.dis7.pdus.*;
 import edu.nps.moves.dis7.utilities.*;
-import edu.nps.moves.dis7.enumerations.Country;
-import edu.nps.moves.dis7.enumerations.EntityKind;
-import edu.nps.moves.dis7.enumerations.PlatformDomain;
 
 /**
  * Creates and sends ESPDUs in IEEE binary format. Adapted from OpenDIS library