Support Throwable on PHP 7 for Raygun Handler

[Sazpaimon]

Like I said, here's the PR to allow the Raygun handler to accept Throwable types on PHP 7. If you aren't running PHP 7, the handler should function exactly the same as it does without this PR. I also added a unit test that will be skipped on PHP < 7. Travis was also updated to add PHP 5.6 and 7 support, so CI will work with that test.

[wpillar]

@Sazpaimon when would you have a class that implements Throwable but doesn't extend Exception? According to the manual classes can't implement it directly, they have to extend Exception? http://php.net/manual/en/class.throwable.php

[wpillar]

Or is it for catching Error subclasses?

[Sazpaimon]

Correct, right now it'll be for the Error subclass, but since Throwable has all the methods Raygun needs to construct a message, I made the check for Throwable in case future PHP versions add another subclass. This isn't very different to how Monolog itself handles Throwable: https://github.com/Seldaek/monolog/blob/master/src/Monolog/Formatter/NormalizerFormatter.php#L94

[wpillar]

@Sazpaimon thanks for the link, that makes me feel better about the version checking.

[wpillar]

@Sazpaimon 👍 if you fix the conflicts and the build passes, this should be good to go.

[Sazpaimon]

I see you already updated Travis for PHP 7. Cool, I removed that change from my branch.

[wpillar]

@Sazpaimon thanks! are you happy with where we're at? Shall I tag?

[Sazpaimon]

Yep, that covers everything that I think I need.

[wpillar]

@Sazpaimon tagged: https://github.com/graze/monolog-extensions/releases/tag/1.6.0

Thanks again for contributing!