Clean up RT handling
Log levels
Hate fewer
Don't reply to RTs by default

Requested by <https://twitter.com/deckmanCoss/status/514898985413525504>

This is referring to
<https://twitter.com/fewerror/status/514898163694862336>. It's all well
and good to claim that fewerror is opt-in because it only follows people
who follow it, but replying to RTs kind of defeats that, so for now,
let's turn that off.