Invalid type hinting in initial_channels

[junah201]

I was just curious about TwitchIO's internal code implementation and happened to stumble upon an incorrect type hint.

The type of initial_channels in WSConnection is actually Union[list, tuple, Callable], but it is List[str].

[github-actions[bot]]

Hello! Thanks for the issue. If this is a general help question, for a faster response consider joining the official Discord Server

Else if you have an issue with the library please wait for someone to help you here.