Migrating to rxjava2

[jakubvimn]

This PR updates RxJava to version 2.x
I cannot guarantee that it work (no unit tests to confirm that :( ), but if there are no null values passed to Observables, it should without any problems.

[pavlospt]

Great work once again! Although this is a breaking change. I will probably need to host 2 different versions of the library! Will keep it open until I decide on what branching model I should follow. Any thoughts on this?

[jakubvimn]

There are some libraries that have different branches for different RxJava versions, like RxAndroid, but such approach requires more work for maintenance. Cutting off all the clients using RxJava1 may not be a good choice either. Maybe to best option would be using this library https://github.com/akarnokd/RxJava2Interop for backward compatibility. There are 2 options with it:

• supporting only RxJava2 and pointing this library in README to give hope for RxJava1 users
• using RxJava2 in the library but creating another module wrapping it with RxJava1 interface.

[pavlospt]

Yeap, that seems right, I guess I will just create another branch then and follow that strategy. Will update you tomorrow :)

[d4rken]

Any update on this?

[pavlospt]

@d4rken Hello, none yet, did not find the time to deal with it!