Fix CITATION.cff and add automatic validation of your citation metadata

[fdiblen]

Hello!

We noticed that your CITATION.cff had a small issue and fixed it by updating the date-released field.

In addition to the fix, this Pull Request automates validation of that file using the cffconvert GitHub Action. That way, it's a little bit easier to be robust against future changes to the CITATION.cff file.

BTW it's perfectly fine if you don't feel like accepting this Pull Request for whatever reason -- we just thought it might be helpful is all.

We found your repository using a partially automated workflow; if you have any questions about that, feel free to create an issue over at https://github.com/cffbots/filtering/issues/

On behalf of the cffbots team,
@abelsiqueira / @fdiblen / @jspaaks

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Pull request checklist

Read the Contribution Guidelines for detailed information.

• Changes are described in the pull request, or an existing issue is referenced.
• The test suite compiles and runs without error.
• Code coverage is 100%. Test cases can be added by editing the test suite.
• The source code is amalgamated; that is, after making changes to the sources in the include/nlohmann directory, run make amalgamate to create the single-header file single_include/nlohmann/json.hpp. The whole process is described here.

Please don't

• The C++11 support varies between different compilers and versions. Please note the list of supported compilers. Some compilers like GCC 4.7 (and earlier), Clang 3.3 (and earlier), or Microsoft Visual Studio 13.0 and earlier are known not to work due to missing or incomplete C++11 support. Please refrain from proposing changes that work around these compiler's limitations with #ifdefs or other means.
• Specifically, I am aware of compilation problems with Microsoft Visual Studio (there even is an issue label for these kind of bugs). I understand that even in 2016, complete C++11 support isn't there yet. But please also understand that I do not want to drop features or uglify the code just to make Microsoft's sub-standard compiler happy. The past has shown that there are ways to express the functionality such that the code compiles with the most recent MSVC - unfortunately, this is not the main objective of the project.
• Please refrain from proposing changes that would break JSON conformance. If you propose a conformant extension of JSON to be supported by the library, please motivate this extension.
• Please do not open pull requests that address multiple issues.

[coveralls]

Coverage remained the same at 100.0% when pulling 65fa825 on cffbots:cffbots-cffconvert into d8a6329 on nlohmann:develop.

[nlohmann]

I am fine taking over the date fix, but adding a CI step is overkill. In the future, I will only edit the date in the file, and that will be done in a script anyways.

Can you please remove .github/workflows/cffconvert.yml?

[abelsiqueira]

Hi @nlohmann, I have removed the commit that added cffconvert.yml. It should be good to go now. Let me know if you see anything else.

[nlohmann]

Looks good to me.

[nlohmann]

Thanks!