* Added a 'FEEDS.AUDIENCE_METRICS' field to the database.
* Incremented the database version to 316.
* Added a 'Collect Audience Metrics' checkbox to the 'Feed'
dialog in rdadmin(1).
* Added an 'RDTransfer' base class.
* Rebased 'RDDelete' to 'RDTransfer'.
* Added 'sftp' support to 'RDDelete'.
* Added 'file' support to 'RDDelete'.
* Refactored RSS generation to occur in 'RDFeed'.
* Added a 'delete_test' test harness.
* Fixed a bug in rdadmin(1) that caused the credentials fields to
be greyed out when configuring a podcast feed to use SFTP uploads.
* Fixed a bug in 'RDExport' that caused encoding of credentials
to be corrupt.
* Fixed a regression in the RDFeed service that caused detection
of feed names to fail.