add a verbose mode, where processing/asset warnings are shown, otherwise hide them to cause less confusion

[cmosig]

[amrirasyidi]

May I help you with this one?
And if I may, can you lead me where/how to start?

[cmosig]

@amrirasyidi oh first contributer, welcome :)

It would mainly be replacing all prints with calls to the logging library. I think the majority should only be for debugging. Also main function process would need to get a new optional parameter specifying the logging level.

[amrirasyidi]

@cmosig okay, I'll see what I can do!