Hi all,

Creative Commons just released their 4.0 licenses (see e.g.
https://twitter.com/dancohen/status/405331406622306304 ). IANAL, but
it is my understanding that we're free to upgrade all existing styles
and locales from CC BY-SA 3.0 to this license without having to
consult the original contributors. See
http://wiki.creativecommons.org/License_Versions#Compatibility_mechanism_in_BY-SA_licenses
, which says "Starting with the release of the 2.x license suites, CC
expanded compatibility by allowing contributions to adapted material
to be created under the same or later version of the original license,
including other ported versions of the same or later version of the
license".

I'm not really sure there are big advantages for us to upgrading to
4.0, but I think it would be a simple change to make if we wanted to.

Rintze

On Wed, Jan 4, 2012 at 10:05 AM, Rintze Zelle <[email protected]> wrote:
> I also updated the license conditions for the style repository, which seemed
> necessary, since the CC BY-SA license specifies that "[y]ou must attribute
> the work in the manner specified by the author or licensor".
>
> https://github.com/citation-style-language/styles/blob/master/README.md
>
> In short, I think we should demand that any project using CSL styles from
> the repo should publicly acknowledge this, and that
> authorship/contributorship information shouldn't be stripped from
> distributed styles. Let me know if you think the text needs changes/polish.
>
> Rintze
>
> On Tue, Jan 3, 2012 at 6:20 PM, Rintze Zelle <[email protected]> wrote:
>>
>> Dear all,
>>
>> As of this moment, all the CSL styles in the style repository at
>> https://github.com/citation-style-language/styles are registered under a
>> single license, using the exact string "This work is licensed under a
>> Creative Commons Attribution-Share Alike 3.0 License:
>> http://creativecommons.org/licenses/by-sa/3.0/";.
>>
>> I added the license to styles that did not carry one, updated older
>> versions of the license, and replaced ported variants by the unported
>> version. I got permission of the style authors who had released their styles
>> under by-nc-sa licenses to switch to by-sa.
>>
>> Going forward I would like to require that any new style added to the
>> repository should use Creative Commons Attribution-Share Alike (I already
>> included this in our requirements:
>> https://github.com/citation-style-language/styles/wiki/Style-Requirements ).
>>
>> If anybody has an issue with any of these changes, please let me know,
>>
>> Rintze

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