patch 8.2.3280: 'virtualedit' local to buffer is not the best solution

Problem:    'virtualedit' local to buffer is not the best solution.
Solution:   Make it window-local. (Gary Johnson, closes #8685)
diff --git a/src/version.c b/src/version.c
index 69df671..32403f4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3280,
+/**/
     3279,
 /**/
     3278,