source contains non-free image

[jonassmedegaard]

The source file art/crdt_merge.png contains an embedded ICC profile which is copyright Apple and not freely licensed, effectively making that image non-free.

Please strip that ICC profile from the image (assuming there is no actual need for it).

In case you are curious how to check for (e.g. license and copyright) metadata in ICC profiles embedded in images, the most convenient way I am aware of is to use commandline tool exiftool part of perl CPAN module Image::ExifTool.