Extend Throwable in Exception marker interface

[BackEndTea]

No description provided.

[Majkl578]

Tricky.
One one hand this is ok as Exceptions already implement all methods from Throwable.
On the other if anyone implemented only this interface, it's a BC break.

@Ocramius Thoughts?

[Ocramius]

@Majkl578 not a BC break IMO, since implementing this interface not on an exception would be extremely unwise and already unsupported by us anyway, since the interface explicitly states:

  * Base exception marker interface for the instantiator component 

Yes, we don't have a BC policy for this, but we can't have a BC policy for everything.

[Majkl578]

I basically quoted the reason why Symfony reverted this change, but I'm generally 👍 for these. Also plays well with phpstan/phpstan#1001.

[BackEndTea]

Thanks for the review and merge @Ocramius & @Majkl578

[alcaeus]

Strictly speaking, this is a BC break: we're adding new methods to an interface that previously weren't there. I don't think this should be included in 1.x.

[malarzm]

But you need those method anyway :)

[Majkl578]

Technically you don't, I'd you mocked only the marker interface, you are now required to implement these new methods while there were none previously.