fix: release with python3.8

Context

There are issues in the aidge_core CI Release with Python3.8 like "TypeError: 'type' object is not subscriptable"

• Python3.8 doesn't support the newer type hinting syntax, requiring from typing import Optional, Union, List instead
• The | syntax for union types was introduced in Python3.10
• is_relative_to() method was introduced in Python 3.9

This MR aims at fixing these.

changed milestone to %aidge_core - v0.4.0

added CI 👷 Fix 🔥🔥 labels

assigned to @pineapple

added 7 commits

• b0127ee9...35e890ba - 6 commits from branch dev
• 0214c5bb - fix: release with python3.8

Compare with previous version

enabled an automatic merge when all merge checks for 0214c5bb pass

changed the description

mentioned in commit 3c4b68ec

merged

@pineapple @gregkub Don't we have a 3.9 dependance with setuptools-scm ?

Here is the linked issue. I don’t seem to have noted the exact required python version but it happens at least on 3.7. You can try locally by running cibuilwheel with specific python version. To do that check the related section in pyprojet.toml aidge#177 (closed)

mentioned in issue #203 (closed)