Todo list

One more: make drupal_execute better (remain silent, try it out that how it behaves in general, etc)
Tests detailed:
- test for feeds: tons of real-world test feeds (all of the types).Test cases should trigger the problematic points of the feed. The feeds should contain extremely big feeds too. Example: input: foo.xml, test: assertEqual($node>-feed->items[0]->namespaces['dc']['foo'], 'bar)
- tests for feed type autodetection Example: input: url1, test: assertEqual(detected_url, url2)
- test for the processors: function-based tests where possible (for example: input: feed item node, test: create it via aggregator_node's own function)
- test for the aggregator: general tests: creating a feed from 0 via a test (like feedapi does the testing)

Updated todo list:

• tests
• overridable deduping
• add enclosure and namespace support to the parser
• add meaningful and helpful information and error messages
• purging variables at uninstall

Updated todo list:

• Good default deduping method - done (existing aggregator 's method. But maybe replaced with even better...)
• Implement two menu items: aggregator/rss and aggregator/opml - done
• Make syndication_parser feed tests optional
• Eliminate the warning when saving items with node processor and taxonomy inherit is turned on. (it works ok, but warnings appear)
• Implement feed refresh frequency - done