patch 8.0.1359: libvterm ANSI colors can not always be recognized

Problem:    Libvterm ANSI colors can not always be recognized from the RGB
            values. The default color is wrong when t_RB is empty.
Solution:   Add the ANSI color index to VTermColor.
diff --git a/src/version.c b/src/version.c
index 3cbfe9e..075760f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1359,
+/**/
     1358,
 /**/
     1357,