updated for version 7.3.023
Problem:    External program may hang when it tries to write to the tty.
Solution:   Don't close the slave tty until after the child exits. (Nikola
            Knezevic)
diff --git a/src/version.c b/src/version.c
index 9db3fce..6b7742e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    23,
+/**/
     22,
 /**/
     21,