Fix undo pasting of multiple lines

src/main/java/io/github/jadefalke2/actions/LineAction.java

@@ -4,6 +4,7 @@
 import io.github.jadefalke2.Script;
 
 import java.util.Arrays;
+import java.util.stream.IntStream;
 
 public class LineAction implements Action{
 
@@ -70,7 +71,7 @@ private void replaceRows(int[] rows, InputLine[] replacement){
 		if(rows.length < replacement.length) //missing frames -> add emptys that there are enough to replace
 			insertEmptyRows(replacement.length - rows.length);
 		if(rows.length > replacement.length) //too many frames -> remove redundant lines
-			deleteRows(false, Arrays.copyOfRange(rows, replacement.length, rows.length));
+			deleteRows(Arrays.copyOfRange(rows, replacement.length, rows.length));
 
 		for(int i=0;i<replacement.length;i++){
 			int row = i < rows.length ? rows[i] : rows[rows.length-1] + (i - rows.length) + 1;
@@ -93,11 +94,12 @@ private void cloneRows(){
 	}
 
 	private void deleteRows(boolean undo){
-		deleteRows(undo, rows);
+		int[] toRemove = undo ? IntStream.range(rows[rows.length-1]+1, rows[rows.length-1]+1+replacementLines.length).toArray() : rows;
+		deleteRows(toRemove);
 	}
-	private void deleteRows(boolean undo, int[] rows){
+	private void deleteRows(int[] rows){
 		for (int i = rows.length - 1; i >= 0; i--){
-			int row = undo ? rows[i]+rows.length : rows[i];
+			int row = rows[i];
 			script.removeRow(row);
 		}
 	}