Allow API key on a per request basis
Previously API key was specified at compile time using Mix config.
In order to provide greater flexibility for things like marketplace providers we now provide the ability to swap API on a per request basis.
This introduces a breaking change wherein all requests require you to pass in your API key. A helper is provided to ensure the key is formatted appropriately PINXS.config("MY API KEY")
. This will be passed as the last parameter to all requests.