Release description

[Akuli]

Jou release in my inbox:

Porcupine release in my inbox:

Basically, the Porcupine release looks much better. It actually tells you what was changed.

For Jou, IMO it would be best to just list the pull requests included in the release, with just the short one-line description and a link to the pull request. This way, the releases will continue to be fully automated.