=head2 Log Levels

There are six predefined log levels: C<FATAL>, C<ERROR>, C<WARN>, C<INFO>,
C<DEBUG>, and C<TRACE> (in descending priority). Your configured logging level
has to at least match the priority of the logging message.

If you need to find out if the currently configured logging
level would allow a logger's logging statement to go through, use the
logger's C<is_I<level>()> methods:

    $logger->is_trace()    # True if trace messages would go through

Also available are a series of more Java-esque functions which return
the same values. These are of the format C<isI<Level>Enabled()>,
so C<$logger-E<gt>isDebugEnabled()> is synonymous to 
C<$logger-E<gt>is_debug()>.

=cut