• (ms) appender_thresholds_adjust() with a parameter of 0 now
  does nothing (requested by Oliver Koch).
  
• (kg) Added 'defer_connection' to Socket appender so it's more useful
  under Apache.
  
• (ms) [rt.cpan.org #32738] fixed caller_depth for error_warn()
  (reported by Felix Antonius Wilhelm Ostmann)
  
• (ms) [rt.cpan.org #32942] fixed get_logger() for subclassed Log4perl
  (reported by Felix Antonius Wilhelm Ostmann)