Adding milliseconds to the logger (#111)

pytket/extensions/cutensornet/general.py

@@ -18,7 +18,7 @@
 def set_logger(
     logger_name: str,
     level: int = logging.WARNING,
-    fmt: str = "[%(asctime)s] %(name)s (%(levelname)s) - %(message)s",
+    fmt: str = "[%(asctime)s.%(msecs)03d] %(name)s (%(levelname)s) - %(message)s",
 ) -> Logger:
     """Initialises and configures a logger object.