Add more version options for CC licenses and clarify the versions used

godotengine / godot-asset-library

PHP frontend for Godot Engine's asset library

https://godotengine.org/asset-library

MIT License

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Add more version options for CC licenses and clarify the versions used #153

Closed Calinou closed 6 years ago

Calinou commented 6 years ago

Follow-up to #152.

It's important to specify the version number because there are significant differencees between versions (as well as potential incompatibility issues).

CC license versions below 3.0 are very uncommon today (and are not considered free by the Debian Free Software Guidelines), so I did not add them to the list.