patch 9.0.0887: cannot easily try out what codes various keys produce

Problem:    Cannot easily try out what codes various keys produce.
Solution:   Add a script to gather key code information, with an initial list
            of codes to compare with.
diff --git a/src/version.c b/src/version.c
index d7f4808..08c05f3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    887,
+/**/
     886,
 /**/
     885,