Feature Request: logger.info to return nil

[olleolleolle]

I would like logger's logging methods to return nil when they output messages.

Use-case: When logging a message at the end of an ensure clause one often means to "just print", and not return a list of outputters. Perhaps the logger.info used to be a puts. Now, its return value is non-nil and oy vey.

[olleolleolle]

I guess it about the each that returns its receiver in places like https://github.com/chef/mixlib-log/blob/master/lib/mixlib/log.rb#L143