apparently 3.5 is too old for us, require python >=3.6

setup.py

@@ -30,7 +30,7 @@ setup(
     install_requires=["pyserial>=3.4", "protobuf>=3.13.0",
                       "pypubsub>=4.0.3", "dotmap>=1.3.14", "pexpect>=4.6.0", "pyqrcode>=1.2.1",
                       "pygatt>=4.0.5"],
-    python_requires='>=3.4',
+    python_requires='>=3.6',
     entry_points={
         "console_scripts": [
             "meshtastic=meshtastic.__main__:main"