Add shipping preference option to RestPurchaseRequest

[jlttt]

Fix #175.

Add shipping_preference option to RestPurchaseRequest which allow to disable the shipping address with value set to NO_SHIPPING.

[SlimDeluxe]

Any chance of getting this merged anytime soon?

[SlimDeluxe]

Tested and it works.
You should probably...

1. Make the "NO_SHIPPING" a class constant
2. Add comments, especially for setShippingPreference() so it's clear what exactly it does and what the options are (if there are more)

[jlttt]

@SlimDeluxe Thanks for your advices. I add comments on supported values for setShippingPreference() and create associated class constants.

[SlimDeluxe]

@jlttt I tested the RestAuthorizeRequest with your code and it works there also. Since RestPurchaseRequest extends RestAuthorizeRequest, I suggest you move the code to the parent class instead.
BTW I found out you can properly manage the shipping address if you create an "experience profile". Please see #192

[delatbabel]

This will need a manual merge because of the conflicts. I'll get to that when I have sufficient time.

[jlttt]

@delatbabel I update the PR and remove the conflicts.

[SlimDeluxe]

@BrightSkyz just copy the file manually until they merge it.
Otherwise I suggest you set up the "experience profile" I mentioned above. It can be easily done with the official PayPal SDK for PHP.

[digibeuk]

can someone merge this? we also need it

[digibeuk]

I would propose to make you changes in : \Omnipay\PayPal\Message\AbstractRestRequest so setting this preference can also be done in other Rest based request like the RestAuthorizeRequest also you did not add a test

[eqxDev]

Is there any update on this?

[PatrickHollweck]

Any updates on this? Can we merge this? :)

[VanillaChan6571]

Why the hell is this not merged yet?

[delatbabel]

Usually when I want something done I use words like "please" not "why the hell". However I'm not your mother.

[SlimDeluxe]

... but it got your attention after more than 5 years :)
Can you please merge this? 😇