Fixed a bug when the start parameter is given to the get_items function
and multifeed_objects is true, the array was being sliced twice, once
in merge_items and again at the end of get_items.
Force all items to have a timestamp.
Check that absolutize doesn't return false.
Check if items have a date in sort_items and sort to the top if not.
Remove parser changes.
Revert absolutize_url changes.
An error message is set when fetch_data returns false, but it wasn't
getting triggered. Also IRI absolutize wasn't using the base path when
given a relative path that required concatenating.
Fixed a few bugs to pass tests, and fixed a few bugs in tests.
Merge remote-tracking branch 'tests/master'