docs: Update copyright year for files modified (so far) in 2022

backend_canonselphyneo.c

@@ -1,7 +1,7 @@
 /*
  *   Canon SELPHY CPneo series CUPS backend -- libusb-1.0 version
  *
- *   (c) 2016-2021 Solomon Peachy <pizza@shaftnet.org>
+ *   (c) 2016-2022 Solomon Peachy <pizza@shaftnet.org>
  *
  *   The latest version of this program can be found at:
  *

backend_common.c

@@ -1,7 +1,7 @@
 /*
  *   CUPS Backend common code
  *
- *   Copyright (c) 2007-2021 Solomon Peachy <pizza@shaftnet.org>
+ *   Copyright (c) 2007-2022 Solomon Peachy <pizza@shaftnet.org>
  *
  *   The latest version of this program can be found at:
  *
@@ -1011,7 +1011,7 @@ static void dump_stats(struct dyesub_backend *backend, struct printerstats *stat
 void print_license_blurb(void)
 {
 	const char *license = "\n\
-Copyright 2007-2021 Solomon Peachy <pizza AT shaftnet DOT org>\n\
+Copyright 2007-2022 Solomon Peachy <pizza AT shaftnet DOT org>\n\
 \n\
 This program is free software; you can redistribute it and/or modify it\n\
 under the terms of the GNU General Public License as published by the Free\n\

backend_common.h

@@ -1,7 +1,7 @@
 /*
  *   CUPS Backend common code
  *
- *   (c) 2013-2021 Solomon Peachy <pizza@shaftnet.org>
+ *   (c) 2013-2022 Solomon Peachy <pizza@shaftnet.org>
  *
  *   The latest version of this program can be found at:
  *

backend_dnpds40.c

@@ -1,7 +1,7 @@
 /*
  *   Citizen / DNP Photo Printer CUPS backend -- libusb-1.0 version
  *
- *   (c) 2013-2021 Solomon Peachy <pizza@shaftnet.org>
+ *   (c) 2013-2022 Solomon Peachy <pizza@shaftnet.org>
  *
  *   Development of this backend was sponsored by:
  *

backend_hiti.c

@@ -1,7 +1,7 @@
 /*
  *   HiTi Photo Printer CUPS backend -- libusb-1.0 version
  *
- *   (c) 2019-2021 Solomon Peachy <pizza@shaftnet.org>
+ *   (c) 2019-2022 Solomon Peachy <pizza@shaftnet.org>
  *
  *   The latest version of this program can be found at:
  *

backend_mitsu70x.c

@@ -1,7 +1,7 @@
 /*
  *   Mitsubishi CP-D70/D707 Photo Printer CUPS backend -- libusb-1.0 version
  *
- *   (c) 2013-2021 Solomon Peachy <pizza@shaftnet.org>
+ *   (c) 2013-2022 Solomon Peachy <pizza@shaftnet.org>
  *
  *   The latest version of this program can be found at:
  *

backend_shinkos2145.c

@@ -1,7 +1,7 @@
 /*
  *   Shinko/Sinfonia CHC-S2145 CUPS backend -- libusb-1.0 version
  *
- *   (c) 2013-2021 Solomon Peachy <pizza@shaftnet.org>
+ *   (c) 2013-2022 Solomon Peachy <pizza@shaftnet.org>
  *
  *   Development of this backend was sponsored by:
  *