Prefer split named arguments rather than lists

[apbard]

[style]
based_on_style=chromium
split_before_named_assigns=False

When there are lists as arguments yapf seems to adopt a weird splitting:

def fooooooooooooo(aka=['aaaaaaaa', 'aaaaaaa', 'aaaa', 'aa',
                        'a'], types=['double', 'bool'],
                   validator=some_looooooooooong_name):
    pass


def fooooooooooooo(type01=aaaaaa, type02=['double'], type03=['double'],
                   aka=['aaaaaaaa', 'aaaaaaa', 'aaaa', 'aa',
                        'a'], aaaaa=['double', 'bool'],
                   validator=some_looooooooooong_name):
    pass

instead I would prefer:

def fooooooooooooo(aka=['aaaaaaaa', 'aaaaaaa', 'aaaa', 'aa', 'a'], 
                   types=['double', 'bool'],
                   validator=some_looooooooooong_name):
    pass


def fooooooooooooo(type01=aaaaaa, type02=['double'], type03=['double'],
                   aka=['aaaaaaaa', 'aaaaaaa', 'aaaa', 'aa', 'a'], 
                   aaaaa=['double', 'bool'],
                   validator=some_looooooooooong_name):
    pass