Update appcast.xml for 0.9.78
Update appcast.xml for 0.9.78

asmagill/hammerspoon,CommandPost/CommandPost-App,asmagill/hammerspoon,Hammerspoon/hammerspoon,cmsj/hammerspoon,latenitefilms/hammerspoon,latenitefilms/hammerspoon,cmsj/hammerspoon,Habbie/hammerspoon,asmagill/hammerspoon,Hammerspoon/hammerspoon,latenitefilms/hammerspoon,Hammerspoon/hammerspoon,cmsj/hammerspoon,Habbie/hammerspoon,CommandPost/CommandPost-App,CommandPost/CommandPost-App,Hammerspoon/hammerspoon,cmsj/hammerspoon,Hammerspoon/hammerspoon,Habbie/hammerspoon,Habbie/hammerspoon,asmagill/hammerspoon,latenitefilms/hammerspoon,cmsj/hammerspoon,latenitefilms/hammerspoon,Habbie/hammerspoon,Habbie/hammerspoon,asmagill/hammerspoon,CommandPost/CommandPost-App,asmagill/hammerspoon,CommandPost/CommandPost-App,Hammerspoon/hammerspoon,latenitefilms/hammerspoon,CommandPost/CommandPost-App,cmsj/hammerspoon