Updated the ant build to create the output directory

build.xml

@@ -17,6 +17,7 @@
     </target>
 
     <target name="compile">
+        <mkdir dir="${classes.dir}" />
         <javac srcdir="${src.dir}"
                destdir="${classes.dir}"
                includeantruntime="false" />
@@ -25,7 +26,6 @@
     <target name="jar" depends="compile">
         <jar destfile="${jar-file}" basedir="${classes.dir}">
             <manifest>
-                <attribute name="Manifest-Version" value="1.0" />
                 <attribute name="Main-Class" value="${main-class}" />
             </manifest>
         </jar>

src/main/LispInterpreter.java

@@ -78,6 +78,8 @@ public class LispInterpreter {
                 System.out.print(PROMPT);
             }
         }
+        
+        System.out.println();
     }
 
     private static void erasePrompt(boolean interactive) {