altoslib: Make AltosState serializable

This involved making every class it references serializable as well

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/altoslib/AltosMag.java b/altoslib/AltosMag.java
index 1fa8877b..8784bb81 100644
--- a/altoslib/AltosMag.java
+++ b/altoslib/AltosMag.java
@@ -18,8 +18,9 @@
 package org.altusmetrum.altoslib_5;
 
 import java.util.concurrent.*;
+import java.io.*;
 
-public class AltosMag implements Cloneable {
+public class AltosMag implements Cloneable, Serializable {
 	public int		along;
 	public int		across;
 	public int		through;