Update readme

[cornelk]

• improves badges
• fixes line wrapping, the result is rendered the same
• fixes and extents the
• removes old release notes
• fix CI by running make regenerate

[cornelk]

@awalterschulze I updated the MR and description, sorry for the long delay :)

[awalterschulze]

Been waiting long enough for a second approver, I hope it is okay if I merge this.