Update appcast.xml for 0.9.90
Update appcast.xml for 0.9.90

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