Carson Lam

This issue is tricky because of [`timeRange()`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Proxy_servers_and_tunneling/Proxy_Auto-Configuration_PAC_file#timerange). Though that function may be rarely used, its existence means caching to reduce JS calls could introduce incorrect behaviour. `pac_context_for_url()` is different approach...

It looks like #73 resolved this, right?

This problem seems to be inherent to self-hosted runners on Windows that aren't using `actions/setup-python`, so I don't have a good answer for how to test it. I imagine it's...