patch 8.0.0807: terminal window can't handle mouse buttons

Problem:    Terminal window can't handle mouse buttons. (Hirohito Higashi)
Solution:   Implement mouse buttons and many other keys.  Ignore the ones that
            are not implemented.
diff --git a/src/version.c b/src/version.c
index cde101a..95468b2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    807,
+/**/
     806,
 /**/
     805,