Add singleton class to all classes.
Add singleton class to all classes.

Maxwell-Alexius/goby,goby-lang/goby,hachi8833/goby,goby-lang/goby,Maxwell-Alexius/goby,hachi8833/goby,hachi8833/goby,goby-lang/goby,Maxwell-Alexius/goby,st0012/Rooby,st0012/Rooby