Add Atom tests for IDs.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add an author to Atom feeds.

This is required in order to be valid Atom.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Re-raise exceptions in development mode.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Don't put placeholders in comic's website attribute.

This won't be expanded and should be for the entire feed, not each
individual entry.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Generate a valid link for each RSS feed.

This is required in order to be valid RSS 1.0.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>