patch 7.4.2180

Problem:    There is no easy way to stop all timers.  There is no way to
            temporary pause a timer.
Solution:   Add timer_stopall() and timer_pause().

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2180,
 /**/
     2179,
 /**/