Reduces visibility of internal fields/methods

Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.

Reduces the visibility of internal methods to private/protected/default when possible.

src/main/java/appeng/util/LookDirection.java

@@ -25,12 +25,22 @@ import net.minecraft.util.Vec3;
 public class LookDirection
 {
 
-	public final Vec3 a;
-	public final Vec3 b;
+	private final Vec3 a;
+	private final Vec3 b;
 
 	public LookDirection( final Vec3 a, final Vec3 b )
 	{
 		this.a = a;
 		this.b = b;
 	}
+
+	public Vec3 getA()
+	{
+		return this.a;
+	}
+
+	public Vec3 getB()
+	{
+		return this.b;
+	}
 }