patch 8.0.0097

Problem:    When a channel callback consumes a lot of time Vim becomes
            unresponsive. (skywind)
Solution:   Bail out of checking channel readahead after 100 msec.

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    97,
 /**/
     96,
 /**/