What do 
If you want to try out the latest features the skin has to offer, you can install the development branch. To start download the development zip file. Then you can
wee_extension --install development.zipor
Either way, we need to overwrite your current Belchertown skin install in the skins folder and the bin/user foler with the development files. Then you can configure the new features you want and restart weewx when done.