Update copyright year. Update Checklist.txt.

src/main/doc/Checklist.txt

@@ -1,10 +1,11 @@
 Checklist for release (for maintainer)
 
 0. Check in good code ;-). Check that tests run ok, javadoc is ok.
+   (Ideally) update documentation IrpTransmogrifier,xml.
    Update subtree common. (git subtree pull --prefix common [email protected]:bengtmartensson/HarctoolboxCommon.git master)
 1. Update pom.xml: Bump version; can use make setversion NEWVERSION=x.y.z.)
    Check/update version of IrpProtocols.xml.
-   Update releasenotes.
+   Update releasenotes. Update copyright year(?).
    If applicable, update .github/workflows/maven.yml.
    Checkin.
 2. mvn clean, mvn install; make sure commitId is OK.

src/main/xml/Version.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE version PUBLIC  "-//harctoolbox.org//version//en" "http://www.harctoolbox.org/dtds/version.dtd">
 <!--
-Copyright (C) 2017, 2018, 2019, 2020, 2021 Bengt Martensson.
+Copyright (C) 2017, 2018, 2019, 2020, 2021, 2022 Bengt Martensson.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -19,7 +19,7 @@ this program. If not, see http://www.gnu.org/licenses/.
 <version appName="IrpTransmogrifier" package = "org.harctoolbox.irp">
 
     <!-- Verbal description of the license of the current work. -->
-    <licenseString>Copyright (C) 2017, 2018, 2019, 2020, 2021 Bengt Martensson.\n\n
+    <licenseString>Copyright (C) 2017, 2018, 2019, 2020, 2021, 2022 Bengt Martensson.\n\n
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.\n\n
 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.\n\n
 You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.</licenseString>