License too restrictive for boilerplate code

[igneus]

I noticed that this repo is released under GNU GPL v3. In this particular case (boilerplate code intended to be copied when starting development of a new extension) I find this kind of license rather harmful. Boilerplate code imposing licensing restrictions on extension developers hinders proliferation of new extensions. Would you consider switching to some simple license with as little restrictions as possible?

(originally posted as frescobaldi-extensions#1)

[igneus]

Now since Urs is the only author of the code and he's never more there to allow re-licensing, I'm not sure there's a legal way to do it (other than asking his heirs for permission).

On the other hand there's no great demand for this - in fact I'm not aware of anyone else ever developing a Frescobaldi extension. So we may safely let this issue rot. Maybe it's not necessary at all.