Hi Johan,
Great little app. Thanks for sharing. Would you mind choosing a license for it? Ideally, if you want it to be the most permissive, you can choose an MIT License, or a GNU/LGPL license.
If you want to ensure people reusing it will only use it in free software, you should choose GNU/GPL or GNU/AGPL.
The problem is that, without a license, I (and other free software developers/packagers) cannot safely include your work in our software because if you decide (afterwards) to assign a license to it, that isn't compatible with the ones we use, then we risk the license integrity of our software. Giving it a license now ensures we can freely include it and improve it for our communities without the worries of legal problems for doing so...
Thanks!