Created attachment 5500
Update for Upower 0.99
Upower 0.99 changed from the "changed" signal to "notify" as well as the function signature. This patch adds that while still supporting the previous versions of upower.
Thanks, applied in http://git.xfce.org/panel-plugins/xfce4-weather-plugin/commit/?id=d51c1ea939ffeecac6f9f5cd136d35628b585e73.
0.8.4 has been released with the fix. Thanks for the patch.