patch 8.0.1076: term_start() does not take callbacks

Problem:    term_start() does not take callbacks. When using two terminals
            without a job only one is read from.  A terminal without a window
            returns the wrong pty.
Solution:   Support "callback", "out_cb" and "err_cb".  Fix terminal without a
            window. Fix reading from multiple channels.
diff --git a/src/version.c b/src/version.c
index f8a10e3..ad59f5e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1076,
+/**/
     1075,
 /**/
     1074,