ICU-22309 update to LICENSE v3, Readme.md, CONTRIBUTING.md

- LICENSE is now the v3 license with the correct year and title
- README.md now has the required features and drops Terms of Use
- CONTRIBUTING.md now matches the updated language

CONTRIBUTING.md

@@ -12,13 +12,11 @@ ICU is an open source library that is a de-facto industry standard for internati
 
 In order to contribute to this project, the Unicode Consortium must have on file a Contributor License Agreement (CLA) covering your contributions, either an individual or a corporate CLA. Pull Requests will not be merged until the correct CLA is signed. Which version needs to be signed depends on who owns the contribution being made: you as the individual making the contribution or your employer. _It is your responsibility to determine whether your contribution is owned by your employer._ Please review [The Unicode Consortium Intellectual Property, Licensing, and Technical Contribution Policies][policies] for further guidance on which CLA to sign, as well as other information and guidelines regarding the Consortium’s licensing and technical contribution policies and procedures.
 
-- **Individual CLA**: If you have determined that the Individual CLA is appropriate, just open a Pull Request and you will have the opportunity to click to accept the Individual CLA.
+- **Individual CLA**: If you have determined that the Individual CLA is appropriate, then when you open your first Pull Request, an automated comment will appear that contains a link you can follow to accept the Individual CLA.
 
-- **Corporate CLA**: If you have determined that a Corporate CLA is appropriate, please check the [public list of Corporate CLAs][unicode-corporate-clas] that the Consortium has on file. If your employer has already signed a CLA, then just open a Pull Request and you will have the opportunity to click that your employer has already signed a CLA. If your employer has not already signed a CLA, you will need to arrange for your employer to sign the Corporate CLA, as described in [How to Sign a Unicode CLA][signing].
+- **Corporate CLA**: If you have determined that a Corporate CLA is appropriate, please check the [public list of Corporate CLAs][unicode-corporate-clas] that the Consortium has on file. If your employer has already signed a CLA, then when you open your first Pull Request, an automated comment will appear that contains a link you can follow to declare your affiliation with this employer. If your employer has not already signed a CLA, you will need to arrange for your employer to sign the Corporate CLA, as described in [How to Sign a Unicode CLA][signing].
 
-Unless otherwise noted in the [License](./LICENSE) file, this project is released under the free and open-source [Unicode License][unicode-license], also known as Unicode, Inc. License Agreement - Data Files and Software.
-
-SPDX-License-Identifier: Unicode-DFS-2016
+Unless otherwise noted in the [LICENSE](./LICENSE) file, this project is released under the free and open-source [Unicode License][unicode-license], also known as Unicode, Inc. License Agreement - Data Files and Software.
 
 ## Process
 
@@ -97,14 +95,11 @@ Proposed changes will be discussed at the ICU meeting that follows at least six
 
 _… and thanks for contributing!_
 
-### License
+### Copyright & Licenses
 
-Please see [./LICENSE](./LICENSE)
+Copyright © 2016-2023 Unicode, Inc. Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the United States and other countries.
 
-> Copyright © 2021 and later Unicode, Inc. and others. All Rights Reserved.
-Unicode and the Unicode Logo are registered trademarks
-of Unicode, Inc. in the U.S. and other countries.
-[Terms of Use and License](http:https://www.unicode.org/copyright.html)
+The project is released under [LICENSE](./LICENSE).
 
 
 [bugs]: https://icu.unicode.org/bugs

LICENSE

@@ -1,49 +1,42 @@
-UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE
-
-See Terms of Use <https://www.unicode.org/copyright.html>
-for definitions of Unicode Inc.’s Data Files and Software.
-
-NOTICE TO USER: Carefully read the following legal agreement.
-BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
-DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
-YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
-TERMS AND CONDITIONS OF THIS AGREEMENT.
-IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
-THE DATA FILES OR SOFTWARE.
+UNICODE LICENSE V3
 
 COPYRIGHT AND PERMISSION NOTICE
 
-Copyright © 1991-2023 Unicode, Inc. All rights reserved.
-Distributed under the Terms of Use in https://www.unicode.org/copyright.html.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of the Unicode data files and any associated documentation
-(the "Data Files") or Unicode software and any associated documentation
-(the "Software") to deal in the Data Files or Software
-without restriction, including without limitation the rights to use,
-copy, modify, merge, publish, distribute, and/or sell copies of
-the Data Files or Software, and to permit persons to whom the Data Files
-or Software are furnished to do so, provided that either
-(a) this copyright and permission notice appear with all copies
-of the Data Files or Software, or
-(b) this copyright and permission notice appear in associated
-Documentation.
-
-THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
-ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
-WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT OF THIRD PARTY RIGHTS.
-IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
-NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
-DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
-DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
-TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-PERFORMANCE OF THE DATA FILES OR SOFTWARE.
-
-Except as contained in this notice, the name of a copyright holder
-shall not be used in advertising or otherwise to promote the sale,
-use or other dealings in these Data Files or Software without prior
-written authorization of the copyright holder.
+Copyright © 2016-2023 Unicode, Inc.
+
+NOTICE TO USER: Carefully read the following legal agreement. BY
+DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING DATA FILES, AND/OR
+SOFTWARE, YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
+TERMS AND CONDITIONS OF THIS AGREEMENT. IF YOU DO NOT AGREE, DO NOT
+DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE THE DATA FILES OR SOFTWARE.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of data files and any associated documentation (the "Data Files") or
+software and any associated documentation (the "Software") to deal in the
+Data Files or Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, and/or sell
+copies of the Data Files or Software, and to permit persons to whom the
+Data Files or Software are furnished to do so, provided that either (a)
+this copyright and permission notice appear with all copies of the Data
+Files or Software, or (b) this copyright and permission notice appear in
+associated Documentation.
+
+THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+THIRD PARTY RIGHTS.
+
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE
+BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES,
+OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA
+FILES OR SOFTWARE.
+
+Except as contained in this notice, the name of a copyright holder shall
+not be used in advertising or otherwise to promote the sale, use or other
+dealings in these Data Files or Software without prior written
+authorization of the copyright holder.
 
 ----------------------------------------------------------------------
 

README.md

@@ -31,11 +31,11 @@ Fuzzing | [![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/
 - [`tools/`](./tools/) Tools
 - [`vendor/`](./vendor/) Vendor dependencies
 
-### License
+### Copyright & Licenses
 
-Please see [./LICENSE](./LICENSE)
+Copyright © 2016-2023 Unicode, Inc. Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the United States and other countries.
+
+The project is released under [LICENSE](./LICENSE).
+
+A CLA is required to contribute to this project - please refer to the [CONTRIBUTING.md](./CONTRIBUTING.md) file (or start a Pull Request) for more information.
 
-> Copyright © 2016 and later Unicode, Inc. and others. All Rights Reserved.
-Unicode and the Unicode Logo are registered trademarks
-of Unicode, Inc. in the U.S. and other countries.
-[Terms of Use and License](http:https://www.unicode.org/copyright.html)