This release fixes an IRI parsing bug reported recently. It also replaces regex used to find rel links with xpath, and more cleanly separates microformats discovery and parsing when php-mf2 is not included.
I've also been running SimplePie with all error reporting turned on for a few weeks and fixed some Notice errors that occurred infrequently.
New release 1.4.1:
This was prompted by an inconsistent hash result in SimplePie_Item->get_id().
Please note that if you relied on this feature, the returned id's will again change, but hopefully for the last time.
Includes other minor bug fixes and improved support for microformats feeds.