Ignore retweets in strict mode

Signed-off-by: jolheiser <john.olheiser@gmail.com>

handler/twitter.go

@@ -34,6 +34,10 @@ func (t *Twitter) Tweet(tweet *twitter.Tweet) {
 			beaver.Debug("tweet is a reply")
 			return
 		}
+		if tweet.RetweetedStatus != nil {
+			beaver.Debug("tweet is a retweet")
+			return
+		}
 		var match bool
 		for _, id := range t.Filter.Follows {
 			if id == tweet.User.IDStr {