Do not initialize the api key until needed

[nvahalik]

Instantiating the class with the key always reaches out to the API, even if it is never needed. This can add unwanted overhead.

I'd recommend not getting the API token until executing a task that requires it. That way there is no "cost" for instantiating it and never using it.

[SolneilE]

Endorsing this recommendation 100%. Recently had my site become unavailable because the qencode API server was offline - every request that had to load the library would time out, though no API calls were required.