Supports text/unicode, and converts emoji short codes (with auto complete) into unicode representations.
Emoji are text, so you may need to adjust the relative size depending on themes. Default images are ~22px, and the emoji font-size of 1.5em gets a single character on the standard theme & font to near that size.
New SQL-based importer
Off-line only, the forum can't be modified while the migration occurs.
CLI only, as it runs blocking SQL which takes nearly hour at a time.
Vastly faster for large datasets.
Test forum with ~11.1 million posts, ~14.8 million Post Ratings, ~18.4 million Likes; it took 3.6 hours compared to an abandoned +16 hour import test run with the standard importer.
Update standard importer to reduce long running memory usage