Bump python to 3.10+

Author: branchv

README.md

@@ -11,7 +11,7 @@ It uses 3-way pings (akin to TCP SYN, SYN/ACK, ACK) and after-the-fact state com
 
 ## Installation
 
-2ping requires Python 3 version 3.6 or higher.
+2ping requires Python 3 version 3.10 or higher.
 
 To install 2ping with all optional dependencies as a pipx package:
 

pyproject.toml

@@ -12,7 +12,7 @@ authors = [
 ]
 description = "2ping a bi-directional ping utility"
 readme = "README.md"
-requires-python = ">=3.6"
+requires-python = ">=3.10"
 license = "MPL-2.0"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
@@ -57,3 +57,7 @@ include = [
 
 [tool.black]
 line-length = 132
+
+[build-system]
+requires = ["setuptools>=77.0.3"]
+build-backend = "setuptools.build_meta"

twoping/__init__.py

@@ -7,4 +7,4 @@
 import sys
 
 __version__ = "4.6.1"
-assert sys.version_info > (3, 6)
+assert sys.version_info > (3, 10)