patch 8.1.0350: Vim may block on ch_sendraw()

Problem:    Vim may block on ch_sendraw() when the job is sending data back to
            Vim, which isn't read yet. (Nate Bosch)
Solution:   Add the "noblock" option to job_start(). (closes #2548)

src/version.c

@@ -794,6 +794,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    350,
 /**/
     349,
 /**/