I'm happy to (finally) release Prophet 4.3. It's been 'code complete' for a while but I've been a bit busy lately. Anyway, it should be around 50 ELO stronger than 4.2 (so right around 2500 +/- on the CCRL Blitz list).
Only minor eval changes:
* passed pawn bonus broken down by rank (was a single value)
* mobility is now non-linear (inspired by MadChess)
* knight outposts
* trapped bishop penalty