retrowaver

`http_build_query()` converts boolean values to `0` or `1`, while API expects `"true"` or `"false"`

It's not possible to authenticate using [client_credentials flow](https://developer.allegro.pl/auth/#clientCredentialsFlow)

You can't set multiple values of a filter

2

Let's say I'm making the following call, which works fine: ```php $api->offers->listing->get([ 'phrase' => 'sukienka', 'category.id' => 124264, 'parameter.11323' => 2 // używane ]); ``` The thing is, `parameter.11323` could...