Fix type hint for wait parameter in Scheduler and update str2timedelt…

…a usage

myresources/crocodile/meta.py

@@ -535,11 +535,11 @@ def print_summary(self):
 
 
 class Scheduler:
-    def __init__(self, routine: Callable[['Scheduler'], Any], wait: Union[str, int] = "2m", max_cycles: int = 10000000000,
+    def __init__(self, routine: Callable[['Scheduler'], Any], wait: Union[str, int, float] = "2m", max_cycles: int = 10000000000,
                  exception_handler: Optional[Callable[[Union[Exception, KeyboardInterrupt], str, 'Scheduler'], Any]] = None,
                  logger: Optional[Log] = None, sess_stats: Optional[Callable[['Scheduler'], dict[str, Any]]] = None, records: Optional[list[list[Any]]] = None):
         self.routine = routine  # main routine to be repeated every `wait` time period
-        self.wait_sec = str2timedelta(wait).total_seconds() if isinstance(wait, str) else wait  # wait period between routine cycles.
+        self.wait_sec = str2timedelta(shift=wait).total_seconds() if isinstance(wait, str) else wait  # wait period between routine cycles.
         self.logger = logger if logger is not None else Log(name="SchedLogger_" + randstr(noun=True))
         self.exception_handler = exception_handler if exception_handler is not None else self.default_exception_handler
         self.sess_start_time = datetime.now()  # to be reset at .run