README: gaianet-t3e-1100 becomes the default network

Add gaianet-t3e-1100 (final-curriculum fine-tune of t3b)

README: archive t1, correct the engine version ranges

Archive gaianet-t1-1000 (generator of the gen2 self-play data)

README: gaianet-t3b-1000 becomes the default network

Add gaianet-t3b-1000 (+12.0 Elo vs t2)

Model card: single published network

Remove unused previous-generation network

gaianet-t1-1000 (previous generation)

gaianet-t2-1000 (engine 4.2.x default)

Model card

initial commit