Support v3 and v3.1

[latanasov]

Added support for v3 and v3.1 send API + bug fixes.

[Nightbr]

Hey! Amazing work!! It sounds really great!

I have some review:

• I would create a folder MessageFormat which contains:
  • MessageFormatStrategyInterface.php (and remove the interface from MailjetTransport)
  • MessagePayloadV3.php (don't forget the uppercase at first caracter because it's a class name)
  • MessagePayloadV31.php
  • You can also put the Utils.php in this folder or create a BaseMessagePayload.php which implements MessageFormatStrategyInterface and all MessagePayloadXXX will extends from BaseMessagePayload.

In order to respect the SRP.

[latanasov]

Hi @Nightbr , thank you for your suggestions- they are good and will be implemented :)

[Nightbr]

Really great implementation BTW, I really love the way it automatically format the payload for API V3 or V3.1 👍

I just made some code review (doc, ...) just few minor things to fix.

Add to that, I have created some test.json in the folder Tests/Resources, I think we can retrieve them and put them into subfolder such as:

• Tests\Resources\V3: https://github.com/mailjet/MailjetSwiftMailer/tree/master/Tests/Resources
• Tests\Resources\V31: https://github.com/mailjet/MailjetSwiftMailer/tree/sendAPI3.1/Tests/Resources

It could be used for more unit tests.

[latanasov]

@Nightbr your suggestions are very appreciated, already working on them :)

[latanasov]

@Nightbr one more time thanks for your recommendations, they have been implemented with the recent commit .