Epitran overwrites global logging object with highest level

[matgrioni]

In flite.py, which is included in _epitran.py and therefore in __init__.py for the whole package the following line is found:

logging.basicConfig(level=logging.CRITICAL)

This sets the logging for the entire program / module and leads to very surprising behavior and difficulty in debugging. Is there a reason for this call? Ideally it can be removed or replaced with some equivalent that does not impact the overall program level. Really I don't think a library should be setting this type of configuration since the library users will have the context on how the logging should be configured.