Nflgame

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- Expunge errant drives from games.

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- Fix a bug where drives with no plays (a bug in the source data)
causes loading a drive to crash your program.
- Player database update.

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- Windows can't handle symlinks in setup.py.

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- Switched to a more "professional" UNLICENCE.
(There are no practical differences from the WTFPL.)
- Player database update and first game of week 3.
- Moved nflgame-update-players to its own module. (Fixes issue 43.)

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- Make the PyPI page look nicer.

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- Player database updates.
- Weeks 1 and 2 of the 2013 regular season.
- Fixed a bug with getting the uniform number from the JSON file.
- Fixed embarrassing team name misspellings. (issue 41)
- Cleaned up setup.py dependencies and got smarter about requiring
argparse and ordereddict from PyPI.
- Set a timeout on updating the current season week so it doesn't
hang forever.
- A total rewrite of the README to reflect API updates, the new IRC
channel, and teasers about other projects.