Oh, what a coincidence! I was just thinking of creating a thread for this myself.
Here's what I know:
- Dying only costs 0.50 power instead of 1.00
- MarisaB's bomb no longer produces power items during spells
- Large fairies in stage 2 drop 8 items instead of 10
- If you collect a life part when you have 8 lives, it gives you a bomb part in the full version, while in the trial it just adds to the life part counter as normal (with the 9th life being lost if you collect 3 life parts).
- (from 0.01b only) The bonus indicator from 0.01a was re-added
I don't believe it takes any more items for a fragment. I'm almost certain it's still 20 for a bomb part and 60 for a life part. If you tested it on the large fairies in stage 2, though, you'd only be getting 16 items instead of 20 if you tried using the trial version's strategy.