Lambda conditions no longer supported since v3.0?

[renatoGarcia]

Hi!

The following code currently work:

def my_condition(self) -> bool:
    return self.some_value

state_a.to(state_b, cond="my_condition")
state_c.to(state_c, cond=my_condition)

But passing a lambda directly does not:

state_a.to(state_b, cond=lambda self: self.some_value)

The v2.6 documentation suggests lambdas were accepted at one point. Was this lambda
support change intentional? It would be convenient to define simple guard conditions
inline without needing a named method.