better newline handling

src/main/java/carpet/script/Expression.java

@@ -2587,7 +2587,9 @@ public class Expression implements Cloneable
      */
     public Expression(String expression)
     {
-        this.expression = expression.trim().replaceAll(";+$", "");
+        this.expression = expression.trim().
+                replaceAll("\\r\\n?", "\n").
+                replaceAll(";+$", "");
         //this.expression = expression.replaceAll("\\$", "\n").trim();
         VariablesAndConstants();
         UserDefinedFunctionsAndControlFlow();