I am intending to submit a pull request in the near future that remedies this issue.
Sounds good! but please keep it as simple as possible
I see the point of having "new" tags since this enforces a review of the implementation. For example, one file could have Doc at the top but contain non enforced libs appended at the end. However the diff is ridiculously long, of course we are never going to do that.
Please submit a 1 line diff and then we can consider. feel free to suggest to FSF if it's not possible yet according the librejs spec, I'm sure they will happily listen to feedback. Thanks!
In 66568338216c261668a871e1e41a28c9e755bda8: Adding LibreJS license information in piwik.js Fixes #3770 #5276