Document the version date first appeared.

Bump date.

bin/date/date.1

@@ -1,4 +1,4 @@
-.\"	$NetBSD: date.1,v 1.42 2012/04/06 11:36:56 wiz Exp $
+.\"	$NetBSD: date.1,v 1.43 2016/08/11 00:38:06 sevan Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -32,7 +32,7 @@
 .\"
 .\"     @(#)date.1	8.3 (Berkeley) 4/28/95
 .\"
-.Dd November 15, 2006
+.Dd August 11, 2016
 .Dt DATE 1
 .Os
 .Sh NAME
@@ -244,3 +244,8 @@ The
 .Nm
 utility is expected to be compatible with
 .St -p1003.2 .
+.Sh HISTORY
+A
+.Nm
+utility appeared in
+.At v1 .