Scripts failing to run with "No module named window_commands

[SirGnip]

Running a simple script with my arcade repo synced to 7111d49 is triggering ModuleNotFoundErrors:

$ cat test.py
import arcade
print(arcade.Sprite())

$ venv/Scripts/mypy test.py --strict
Success: no issues found in 1 source file

$ venv/Scripts/python test.py
Traceback (most recent call last):
  File "test.py", line 2, in <module>
    import arcade
  File "c:\repo\arcade\arcade\__init__.py", line 32, in <module>
    from window_commands import close_window
ModuleNotFoundError: No module named 'window_commands'

I did a quick tweak and tried adding arcade. to the beginning of the first window_commands imports in __init__.py to make it an absolute import path and reran test.py. It got further. Prefixing a . to make it an explicit relative import also allowed the script to get farther. Python 3 no longer supports "implicit relative imports".

I also just tried running a couple scripts from the examples/ directory in the arcade repo and got the same error.

[pvcraven]

Fixed some errors. Still a lot of errors when running unit tests.

[pvcraven]

Fixed with 2.2.4.