Android ProGuard/R8 rules?

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- [x ] Bug exists Release Version 1.2.4 ( Master Branch)

Hi, first to be clear, I'm using this Java library directly in Android, I'm NOT using the "Android Service" library.

With that said, library breaks when I activate ProGuard/R8 on release builds, because some classes are missing and/or are renamed..

Around the internet I find solutions like
`-keep class org.eclipse.paho.** { *; }`
and it seems to be working, but this is just a bad workaround because it just disables R8 on the whole library.

Can we get an actual specific minimal R8 rules for this library to work?

Thanks.