Non-free dependencies

[IzzySoft]

the latest release just added several non-free dependencies:

• Firebase
• Firebase Analytics
• Firebase Datatransport
• Google Mobile Services

Was that intended? This will make #45 pretty difficult – and I'd also need to remove your app from my repo, where it's already listed since 8/2017, as 5 non-free dependencies is beyond the acceptable limit.

As I see in your build.gradle, most of these dependencies have been actively added – so it's not just "accidentally dragged in" by some other library. Would you at least consider a build flavor with a foss variant, coming without those libraries?

Thanks in advance!

PS: until clarified, I've removed the latest version from my repo and disabled updates.