Why does base not include Float128?

I always thought it was weird that Base supports Float16 but doesn’t include Float128, even though IEE754 considers quads a basic format, while half is just an interchange format: the other benefit of including 128 in base would be a more symmetric literal float syntax in julia 2.0: 1E0 # Float128 1e0 # Float64 1f0 # Float32 1F0 # Float16 instead of 1E0 # Float64 1e0 # also Float64? 1f0 # Float32 1F0 # 1 times the variable F0 it sounds like quadmath (where Float128 currently lives) is hav...