Write release notes for 1.4
Originally created by @sajolida on #9331 (Redmine)
Last time for 1.3 we did something funky with the release notes open to edition in a blueprint. This was quite complicated to handle between testing and master, links to pieces of documentation that were not existing yet, Git hard to analyse, etc. I didn’t like it so much.
This time I propose that we use the same Git setup as before 1.3 but that we try to work on the draft a bit more collectively.
We should base our work on the release notes for the RC.