Python 3.6 is also EoL; drop it.

.github/workflows/tests.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10", "3.11", "3.12-dev"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11", "3.12-dev"]
         os: [ubuntu-latest, macos-latest]
         exclude:
           - os: macos-latest

CHANGES.rst

@@ -23,8 +23,8 @@
   <https://github.com/python-greenlet/greenlet/pull/327>`_; thanks go
   to (at least) Michael Droettboom, Andreas Motl, Thomas A Caswell,
   raphaelauv, Hugo van Kemenade, Mark Shannon, and Petr Viktorin.
-- Remove support for end-of-life Python versions, including Python 2.7
-  and Python 3.5.
+- Remove support for end-of-life Python versions, including Python
+  2.7, Python 3.5 and Python 3.6.
 
 
 2.0.2 (2023-01-28)

appveyor.yml

@@ -83,11 +83,7 @@ environment:
     # Untested 64-bit versions. We don't expect any variance here from
     # the other tested 64-bit versions, OR they are very EOL
 
-    - PYTHON: "C:\\Python36-x64"
-      PYTHON_ARCH: "64"
-      PYTHON_VERSION: "3.6.x"
-      PYTHON_EXE: python
-      GWHEEL_ONLY: true
+    # None right now.
 
     # Untested 32-bit versions. As above, we don't expect any variance
     # from the tested 32-bit versions, OR they are very EOL.
@@ -104,11 +100,6 @@ environment:
       PYTHON_EXE: python
       GWHEEL_ONLY: true
 
-    - PYTHON: "C:\\Python36"
-      PYTHON_ARCH: "32"
-      PYTHON_VERSION: "3.6.x"
-      PYTHON_EXE: python
-      GWHEEL_ONLY: true
 
 
 cache:

setup.py

@@ -229,7 +229,6 @@ def get_greenlet_version():
         'Programming Language :: C',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
@@ -247,6 +246,6 @@ def get_greenlet_version():
             'psutil',
         ],
     },
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     zip_safe=False,
 )

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py36,py37,py38,py39,py310,py27-ns,py310-ns,py311,py311-ns,docs
+    py37,py38,py39,py310,py27-ns,py310-ns,py311,py311-ns,docs
 
 # XXX: Is non-standard thread mode still needed? Check on that.
 [testenv]