add changelog 3.8 (initial output)
add changelog 3.8 (initial output)

guiniol/py3status,ultrabug/py3status,valdur55/py3status,ultrabug/py3status,Andrwe/py3status,Andrwe/py3status,tobes/py3status,guiniol/py3status,ultrabug/py3status,valdur55/py3status,tobes/py3status,valdur55/py3status