Merge pull request #2294 from Kodiologist/slotless

Remove `Keyword.__slots__`

hy/models.py

@@ -248,7 +248,6 @@ class Keyword(Object):
       mangling is performed.
     """
 
-    __slots__ = ["name"]
     __match_args__ = ("name",)
 
     def __init__(self, value, from_parser=False):
@@ -311,19 +310,6 @@ def __call__(self, data, default=_sentinel):
                 raise
             return default
 
-    # __getstate__ and __setstate__ are required for Pickle protocol
-    # 0, because we have __slots__.
-    def __getstate__(self):
-        return {
-            k: getattr(self, k)
-            for k in self.properties + self.__slots__
-            if hasattr(self, k)
-        }
-
-    def __setstate__(self, state):
-        for k, v in state.items():
-            setattr(self, k, v)
-
 
 def strip_digit_separators(number):
     # Don't strip a _ or , if it's the first character, as _42 and