Update of version information and licenses in commands.

Author: ulikunitz

cmd/gxz/licenses.go

@@ -1,7 +1,3 @@
-// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
 package main
 
 const goLicense = `Copyright (c) 2009 The Go Authors. All rights reserved.
@@ -32,7 +28,7 @@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 `
-const xzLicense = `Copyright (c) 2014-2019  Ulrich Kunitz
+const xzLicense = `Copyright (c) 2014-2020  Ulrich Kunitz
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

cmd/gxz/version.go

@@ -1,7 +1,3 @@
-// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
 package main
 
-const version = "v0.5.6"
+const version = "0.5.7"

cmd/xb/version.go

@@ -1,7 +1,3 @@
-// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
 package main
 
-const version = "v0.5.6"
+const version = "0.5.7"