Black can sometimes produce lines that are too long

[dpaiton]

black seems to have trouble with long variable names, resulting in files that have >120 char lines that black is not fixing. One fix we could do to hold off until black is improved is to always use the multi-line definitions:

def someLongFuncName(
  arg1: type = default,
  arg2: type = default,
) -> someLongReturnTypeName:

As opposed to our current pattern of always doing it on one line and letting black split it up if needed.

For reference, this can happen from the IERC4646Hyperdrive.sol contract.