patch 8.2.0829: filter() may give misleading error message

Problem:    filter() may give misleading error message.
Solution:   Also mention Blob as an allowed argument.
diff --git a/src/version.c b/src/version.c
index c2cb3ca..f91ff1a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    829,
+/**/
     828,
 /**/
     827,