fix(twitch): Fix followage and whisper ctxvars.

twitch/context.py

@@ -25,21 +25,21 @@ class CustomCmdUser:
         return self.user.display_name or self.user.name or self.user.id
 
     async def _exec_attr_whisper(self, ctx, message: str):
-        await self.user.send_whisper(to_user=self.user, message=message)
+        await ctx.bot.user.send_whisper(to_user=self.user, message=message)
 
-    async def _exec_attr_followage(self, ctx, channel: twitchio.PartialUser):
+    async def _exec_attr_followage(self, ctx, channel: "CustomCmdUser"):
         followed_at = None
-        query = await channel.fetch_followers(user=self.user)
+        query = await channel.user.fetch_followers(
+            user=self.user, token_for=ctx.bot.user
+        )
         async for follower in query.followers:
             followed_at = follower.followed_at
 
         if followed_at:
             durstr = strfdelta(utc_now() - followed_at)
-            resp = (
-                f"{self.user.mention} has been following {channel.mention} for {durstr}"
-            )
+            return durstr
         else:
-            return f"{self.user.mention} is not following {channel.mention}"
+            return None
 
     @classmethod
     def from_user(cls, user: twitchio.PartialUser):