Fails to parse dict options

[chanind]

Describe the bug

Apologies if I'm overlooking something in the docs, but I can't figure out how to get simple_parsing to parse a dict option. No matter how I pass a dict value, I get an error saying invalid dict value.

To Reproduce

from dataclasses import dataclass
from simple_parsing import ArgumentParser

@dataclass
class Config:
    options: dict | None = None

parser = ArgumentParser()
parser.add_arguments(Config, dest="config")

# fails with error
parser.parse_args(["--options", '{"x": 2}']).config

# also fails with error
parser.parse_args(["--options", "x=2"]).config

Expected behavior
It should return a dataclass with {"x": 2} or {"x": "2"} as option values

Actual behavior

invalid dict value error

Desktop (please complete the following information):

• Version 0.1.6
• Python version: 3.11

Additional context
A reproduction of this is in colab here: https://colab.research.google.com/drive/1LcDSctd9mbi5U-yz2kjuJJHI-n00RQDR#scrollTo=Ubd2JP002p6C