add seaman.sea_recorder

+ do_start argument logger=False disables info messages

base.py

@@ -310,15 +310,21 @@ class ServiceManager:
         ins_list = self.wildcard(ins)
         if ins_list is not None:
             return ins_list
-        if logger is None:
-            class logger:
-                @staticmethod
+        if not logger:
+            if logger is False:
+                def info(fmt, *args):
+                    pass
+            else:
                 def info(fmt, *args):
                     print(fmt % args)
 
-                @staticmethod
-                def error(fmt, *args):
-                    print(('ERROR: ' + fmt) % args)
+            def error(fmt, *args):
+                print(('ERROR: ' + fmt) % args)
+
+            logger = type('Logger', (), {})
+
+            logger.info = info
+            logger.error = error
 
         if ins is None:
             logger.info('nothing to start')