Use PSR interfaces rather than Ivory ones

[willdurand]

It would be better to require psr/http-message and use its interfaces rather than coupling this lib to Ivory one.

poke @egeloen

[egeloen]

The only way to arhive it is to define your own http adapter interface. Basically, the psr/http-message only defines the HTTP message structure, not how send them...

[egeloen]

Futhermore, if you only rely on the psr, you can only deal with raw body, so it would become your responsibility to format it. The point is if you go this way, you will need to bring back some http features in Geocoder.

[willdurand]

You're right. No need for that.

[egeloen]

Instead, a psr/http-client is maybe needed here 😄

[willdurand]

Yes, I thought there was an interface part of the http-message PSR.. I think it has been discussed at some point..