Log levels

[chimurai]

Introduce option.logLevel:

• debug
• info
• warn
• error
• silent

Ability to control the log levels or disable logging.

[Svarozic]

yes very good idea, I would like to see the pairs of addresses in log somewhere that were redirected

[chimurai]

Can you create a new issue for logging the pairs of addresses? (Keeping issues/discussions separate :D)

Would be great if you can provide some logging examples to clarify exactly what information would be useful in the log statements.