Added missing serializable ID fields to several exceptions.

Author: SattaiLanfear

src/org/java_websocket/exeptions/IncompleteHandshakeException.java

@@ -2,6 +2,11 @@
 
 public class IncompleteHandshakeException extends RuntimeException {
 
+	/**
+	 * Serializable
+	 */
+	private static final long serialVersionUID = 7906596804233893092L;
+
 	public IncompleteHandshakeException() {
 		super();
 	}

src/org/java_websocket/exeptions/InvalidFrameException.java

@@ -4,6 +4,11 @@
 
 public class InvalidFrameException extends InvalidDataException {
 
+	/**
+	 * Serializable
+	 */
+	private static final long serialVersionUID = -9016496369828887591L;
+
 	public InvalidFrameException() {
 		super( CloseFrame.PROTOCOL_ERROR );
 	}

src/org/java_websocket/exeptions/InvalidHandshakeException.java

@@ -4,6 +4,11 @@
 
 public class InvalidHandshakeException extends InvalidDataException {
 
+	/**
+	 * Serializable
+	 */
+	private static final long serialVersionUID = -1426533877490484964L;
+
 	public InvalidHandshakeException() {
 		super( CloseFrame.PROTOCOL_ERROR );
 	}

src/org/java_websocket/exeptions/LimitExedeedException.java

@@ -4,6 +4,11 @@
 
 public class LimitExedeedException extends InvalidDataException {
 
+	/**
+	 * Serializable
+	 */
+	private static final long serialVersionUID = 6908339749836826785L;
+
 	public LimitExedeedException() {
 		super( CloseFrame.TOOBIG );
 	}

src/org/java_websocket/exeptions/NotSendableException.java

@@ -2,6 +2,11 @@
 
 public class NotSendableException extends RuntimeException {
 
+	/**
+	 * Serializable
+	 */
+	private static final long serialVersionUID = -6468967874576651628L;
+
 	public NotSendableException() {
 	}