patch 8.1.1559: popup window title property not implemented yet
Problem: Popup window title property not implemented yet.
Solution: Implement the title property.
diff --git a/src/testdir/dumps/Test_popupwin_title.dump b/src/testdir/dumps/Test_popupwin_title.dump
new file mode 100644
index 0000000..ae15279
--- /dev/null
+++ b/src/testdir/dumps/Test_popupwin_title.dump
@@ -0,0 +1,10 @@
+>1+0&#ffffff0| @73
+|2| @73
+|3| @73
+|4| @28| +0#0000001#ffd7ff255|T|i|t|l|e| |S|t|r|i|n|g| | +0#0000000#ffffff0@30
+|5| @28|o+0#0000001#ffd7ff255|n|e| @10| +0#0000000#ffffff0@30
+|6| @28|t+0#0000001#ffd7ff255|w|o| @10| +0#0000000#ffffff0@30
+|7| @28|a+0#0000001#ffd7ff255|n|o|t|h|e|r| @6| +0#0000000#ffffff0@30
+|8| @73
+|9| @73
+@57|1|,|1| @10|T|o|p|