ViksaaSkool

Currently that's not an option - you can dig into the lib, import it in your project and do the changes there

change the size of the resource .png?

not implemented currently, will note if there's further development. you can always fork the code and implement it for yourself ;)

I'll take a look, but I'd go for not obfuscating the lib since it's open source, there's no point...

not sure what you're referring to, but the example is just dummy data

Unable to merge dex, either you have some duplicate libs in your project or you have too many libs. My wild guess.

Can you be more descriptive, maybe some code?

More info needed.