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Bookshelf 0.51 - 10/04/2004
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* Instant Delivery now works. Publishers can use Instant Delivery links
  to set up accounts and add authorization to customers. Should write
  examples of how to use this with PayPal.

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Bookshelf 0.5 - 10/03/2004
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* index.php is knocked out!
* No new features - new ones to come in next release.

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Bookshelf 0.3 - 10/03/2004
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* Extreme code makeover. Went for an object-oriented approach,
  even though that can be hairy in PHP. common.php and download.php
  are completely re-done, with the main index.php to be tackled
  next.
* Adopted the use of the Savant templating engine.
* Split code logically into many more files under include/.

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Bookshelf Beta0.2 - 09/30/2004
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* Updated to work with Pear::DB

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Bookshelf Beta0.1 - 11/10/2002
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* Publishers are now cc'ed on all authorization changes sent to users.
* Fixed download problem after user password change.
	(Previously, if you changed your password, you had to log out
	and log in again in order to download anything.)

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Bookshelf ALPHA - 11/01/2002
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* Included download functionality
* Products can be free or by authorization only