/reply should not reply without a body.
Retrieve user's twitter profile as part of updating config info.
Pull config shortly after start to speed up display of the UI slightly
Named parameters for numToTweet, plus indicating if tweet should act on direct tweet or indirect, e.g., for native retweets.
Retweet should fail if retweeting the user's own tweet.
If tweeting a retweet fails when it should not, pass the error along to the user.
New reply semantics to work with the way the platform handles replies to native retweets (i.e., poorly.)
numToTweet should fail faster when the index provided does not exist.