Still, it's not possible to return multiple values but a python list is now converted into a C#-array that works in the sequence.
The python script itself should look like this
def getConfiguration(config_id):
""" Signature: getConfiguration(int): array<string>"""
return ["feature_1", "feature_2"]
In the sequence, you can then use this list as if it was an array:
config_list:array<string> # initialize array of string
(config_list) = getConfigurationList(1) # assign script output to that array
{first_item = config_list[0]} # get the first string("feature_1")
{second_item = config_list[1]} # get the second string("feature_2")