Guzzle 6

[bendavies]

Hey,

I notice this library is constrained to guzzle 5 because that is what the oauth subscriber supports.
Personally i'm not using oauth to authenticate my sylius based api, so this is a shame for me that i'm constrained to guzzle 5.

There is no guzzle 6 oauth2 subscriber unfortunately, so upgrading is not trivial.

Is there any appetite to get this library working with guzzle 6?
This would require a new subscriber or upgrading commerce guys.

I don't have much motivation to do this however, as I'm not using oauth2...

[bendavies]

@pjedrzejewski just wondered, was there a discussion about not using oauth2 for the sylius api? i seem to remember reading something but can't find it now

[bendavies]

@michalmarcinkowski maybe we can maintain 2 branches here, one for guzzle 5 and one for 6?

[michalmarcinkowski]

@bendavies I added guzzle-6 branch, feel free to open a PR with changes necessary to make it work with Guzzle 6.

[bendavies]

Then issue is that we can't use the current oauth2 subscriber with guzzle6. So i wouldy remove it as a dependency.