tweak _get_loggers so it can tolerate a logger that is not aware of the log level
-rw-r--r-- Changes
-rw-r--r-- Makefile.PL
drwxr-xr-x bin
drwxr-xr-x lib
drwxr-xr-x maint
drwxr-xr-x t
drwxr-xr-x xt