pass **kwargs to __init__

;; Hylang
(defclass LoginScreen [GridLayout]
  (defn --init-- [self &kwargs kwargs]
    (.__init__ (super LoginScreen self) [&kwargs kwargs])
    (setv self.cols 2)
    (self.add_widget (Label :text "User Name"))
    (setv self.username (TextInput :multiline False))
    (self.add_widget self.username)
    (self.add_widget (Label :text "password"))
    (setv self.password (TextInput :password True :multiline False))
    (self.add_widget self.password)))

# Hy2py
class LoginScreen(GridLayout):

    def __init__(self, **kwargs):
        super(LoginScreen, self).__init__([hyx_XampersandXkwargs, kwargs])
        self.cols = 2
        self.add_widget(Label(text='User Name'))
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)
        self.add_widget(Label(text='password'))
        self.password = TextInput(password=True, multiline=False)
        self.add_widget(self.password)
        return None

#Desired outpuit
class LoginScreen(GridLayout):

    def __init__(self, **kwargs):
        super(LoginScreen, self).__init__(**kwargs)
        self.cols = 2
        self.add_widget(Label(text='User Name'))
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)
        self.add_widget(Label(text='password'))
        self.password = TextInput(password=True, multiline=False)
        self.add_widget(self.password)
        return None