Add checkpoint_latest.jld2 (384d/6L/6H/38vocab char-level model)

Add best_model.jld2 (384d/6L/6H/38vocab char-level model)

Add final_model.jld2 (384d/6L/6H/38vocab char-level model)

Add 38-char vocabulary

Add model card for JuliaGPT-v2 (384d/6L char-level model)

initial commit