Use python's in-built logging module

[umute97]

More of a feature request: At the moment, warnings and errors are printed out via print() functions. I suggest using the logging module to filter feedback from pylandau based on a verbosity level.

This happens on the latest release pylandau==2.2.1.

Example

WARNING: sigma > 100 * eta can lead to oszillations. Check result.

[cbespin]

Thanks for the suggestion! I completely agree, but have very limited time currently for support. Since the fix is minimal, could you provide a pull request?

[guigoruiz1]

I second that. The warning is quite annoying and I'd like to be able to silence it

[cbespin]

Sorry, that I did not come to this sooner. I will deal with it probably next week if nobody opens a merge request