patch 9.0.1028: mouse shape test is flaky, especially on Mac OS

Problem:    Mouse shape test is flaky, especially on Mac OS.
Solution:   Instead of starting all timers at the same time, start the next
            one in the callback of the previous one. (Yee Cheng Chin,
            closes #11673)  Also use "bwipe!" instead of "close!" to avoid
            swap files remaining.
diff --git a/src/version.c b/src/version.c
index 4e573bb..ee5627d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1028,
+/**/
     1027,
 /**/
     1026,