Support for mixed List

Dacite supports well unions on list when all the items in the list are of the same class. However it does not seem to support unions on lists that have different types of classes.

Example of a test case that fails right now:

@dataclass
class X:
    i: int


@dataclass
class Y:
    s: str


@dataclass
class Z:
    x_or_y: List[Union[X,Y]]


result = from_dict(Z, {'x_or_y': [{'s': 'test'}, {'i': 1}]})

assert result == Z(x_or_y=[Y(s='test'), X(i=1)])

[konradhalas]

@oTree-org thank you 😃 I will fix it soon 💪

[oTree-org]

+1, I ran into the exact same issue. Thanks for the great library!