#148: update to akka 2.5.1

[thjaeckle]

Pull request for #148

• updated to Akka 2.5.1
• used akka-persistence-query (dropped the -experimental)
• adjusted naming of "AllPersistenceIds" to "PersistenceIds" (renamed in final akka-persistence-query)

I'm not so used in making pull requests, if I can improve something, please let me know :)

[thjaeckle]

Oh, I just saw that RxMongoDriver seems to have a problem with Akka 2.5
I just verified it for Cashbah driver.

[scullxbones]

Ah ok. Will need to wait on RxMongo support then before resolving this one. Hopefully they're close.

[thjaeckle]

ReactiveMongo 0.12.3 is compatible with Akka 2.5.1 - I will adjust in PR this evening.
If you want to change before, go ahead :)

[thjaeckle]

Should build now but the travis build only successfully built half of the diffent configurations with success?!

[scullxbones]

I was able to get it to build via re-running failed jobs. I'd like to sequence #150 before this one for those that are still on 2.4.x series and not ready to upgrade yet.

[thjaeckle]

Great.
Sure, I would do it the same way.

[thjaeckle]

Are there updates on the other issue?
If this would be delayed a lot there is still the option to merge the other issue to both, an akka 2.4 branch and an akka 2.5 one and release it for both major akka-persistence-mongo versions.

[scullxbones]

@thjaeckle - that could work, yes. If #150 doesn't get resolved by Sunday evening - i'll go with that approach. I think @filosganga has a 2.4.x solution for his team anyways - so probably not a hardship for the current users of the functionality.