Follow Pythons logging API (deprecate warn)

[fuchse-ego]

Hello,

I try to have libraries usable as standalone libs and to be used with robot framework / backgroundlogger.
For logging I'd find it useful if the API is similar to Pythons logging.

Python logging deprecated the warn() method in favor of warning():

Note There is an obsolete method warn which is functionally identical to warning. As warn is deprecated, please do not use it - use warning instead.

Is there a chance robotbackgroundlogger can reflect this change, so I can pass a logger object into my libs and use them transparently?