Allow Python 3.13 ...

although tests don't fully work

setup.py

@@ -4,12 +4,12 @@
 from setuptools import find_packages, setup
 
 SYS_VERSION = sys.version_info[0:2]
-if not ((3, 1) <= SYS_VERSION < (3, 13)):
-    mess = "Python Versions 3.1 to 3.12 are supported only in this package."
+if not ((3, 1) <= SYS_VERSION < (3, 14)):
+    mess = "Python Versions 3.1 to 3.13 are supported only in this package."
     if (2, 4) <= SYS_VERSION <= (2, 7):
-        mess += "\nFor your Python, version %s, See trepan2" % sys.version[0:3]
+        mess += f"\nFor your Python, version {sys.version[0:3]}, See trepan2"
     elif SYS_VERSION < (2, 4):
-        mess += "\nFor your Python, version %s, see pydb" % sys.version[0:3]
+        mess += f"\nFor your Python, version {sys.version[0:3]}, see pydb"
     print(mess)
     raise Exception(mess)