change min ver to 3.3

speedtest.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 import sys
-if sys.version_info < (3,8):
+if sys.version_info < (3,3):
-    sys.stderr.write('Python 3.8+ required\n')
+    sys.stderr.write('Python 3.3+ required\n')
     sys.exit(1)
 import os, base64, lzma, hashlib