number->string fails for Floats #5
Description
(number->string 1.2) fails by complaining that to_s expect 0 args, but 1 was given. This is because Ruby's Float#to_s doesn't support the radix arg, as Fixnum#to_s does. I have a partial fix in byteit101@d8b26cc that allows default base 10 to work for floats, but punts on the full float radix support.