Fix bytecode for Python 3.12

[felixonmars]

LOAD_ATTR has been changed in Python 3.12 and it seems reusing the LOAD_GLOBAL logic makes the simple tests passing.

I am not sure if this is correct since I'm pretty new to the code, but maybe it's still helpful.

Fixes #317

[4144]

@felixonmars you can enable github ci in your source repository and see how is tests going

[felixonmars]

@felixonmars you can enable github ci in your source repository and see how is tests going

It seems all failing tests are because of unsupported old Python versions.

[4144]

yes look like tests passed

[mostaszewski]

I've tested it in my project, and it works as expected. @PiotrDabkowski, is there anything we can do to release it?