Release v0.39

Thanks to all contributors to this release!

 Antoine Jacoutot 
 Francesco Giudici 
 Frediano Ziglio 
 Gilmar Santos Jr 
 Haochen Tong 
 Jakub Janků 
 Kevin Pouget 
 Laurent Bigonville 
 Marc-André Lureau 
 Uri Lublin 
 Victor Toso

Signed-off-by: Victor Toso victortoso@redhat.com