GPL-3.0 license reference intended?

[tapdiego-amzn]

Despite the project being licensed under GPL-2.0, the file linked below explicitly references GPL-3.0. Is this intended?

Arcade-Learning-Environment/src/ale/common/Constants.cpp

Line 4 in 6a7e0ae

* Released under GNU General Public License www.gnu.org/licenses/gpl-3.0.txt

[pseudo-rnd-thoughts]

Thanks for raising that, looking at it, the license has always been GPL 2.0
It seems almost from the beginning that this difference existed - 9779b96
Here, the License.txt and Constants.cpp were uploaded with contradicting license names.

@tapdiego-amzn Would you be interested in making a PR to update all gpl-3.0 references consistent and about gpl-2.0?

[tapdiego-amzn]

Sure. The GPL reference linked above is the only one explicitly mentioning version 3 that I could find, so it shouldn't take long.