fix serialization handling of uuid

[temp]

It didn't work with xml here - json worked fine.
Code adapted to JMS\Serializer\Handler\DateHandler::serializeDateTime().
Works fine now.

[coveralls]

Coverage remained the same at 100.0% when pulling 446b8b1 on temp:fix-serialize-uuid into 6d9d3b5 on mhujer:master.

[mhujer]

Thanks! 👍

I've merged it manually (24e419c) and added tests (a94423e).

Can you please verify that the master branch works fine for you? (I'll tag it afterwards).

[temp]

Just tested the master locally, looks good! 👍

[mhujer]

That was quick! :-)

I've released it as 1.0.1

[temp]

Great, thanks! 👍