Export get_loglevel/2 (derp)

src/lager.erl

@@ -29,7 +29,7 @@
         md/0, md/1,
         trace/2, trace/3, trace_file/2, trace_file/3, trace_file/4, trace_console/1, trace_console/2,
         name_all_sinks/0, clear_all_traces/0, stop_trace/1, stop_trace/3, status/0,
-        get_loglevel/1, set_loglevel/2, set_loglevel/3, set_loglevel/4, get_loglevels/1,
+        get_loglevel/1, get_loglevel/2, set_loglevel/2, set_loglevel/3, set_loglevel/4, get_loglevels/1,
         update_loglevel_config/1, posix_error/1,
         safe_format/3, safe_format_chop/3, dispatch_log/5, dispatch_log/6, dispatch_log/9,
         do_log/10, pr/2]).