Tweet from list of "date, tweet" rows on date.

[benlk]

From #1:

• [ ] thing to parse tweets-for-dates CSV to find today's messages, send each message into t

6 will output a list of tweet-date, tweet-text, so we need:

• [ ] know what today's date is
• [ ] find tweets by tweet-date matching today's date
• [ ] pass those tweets to t for tweeting
• [ ] throttle somehow, so it doesn't post 10 items at once at 10 a.m.?