Update to the latest swiftmailer

[F21]

I noticed that the swiftmailer bundled with the library is pretty old. A lot of bug fixes and changes have been released since then.

What do you guys think about updating to the latest swifmailer library?

[theycallmeswift]

Yeah, I would like to do this. Would also be smart to add it as a submodule for easier updating.

Working on a major refactor of the node.js library right now, but I can move to PHP once I'm done with that.

[martyndavies]

Picking this up

[tenitski]

Submodule would be also good as sometimes people have own Swift lib in the project.

[theycallmeswift]

I hate to say it, I think maybe we should fall back on composer. We already have support, we just need to move the swiftmailer lib into the dependencies. Thoughts?

[martyndavies]

I agree, it'll be best for keeping track. I'll work on this in the next couple of days.