tox += CPython 3.10, 3.11

Tests now pass with those versions.
Remove py38-dbg from test matrix ad this version is now a bit outdated
and having just py38 without dbg there seems enough.

setup.py

 # pygolang | pythonic package setup
-# Copyright (C) 2018-2022  Nexedi SA and Contributors.
+# Copyright (C) 2018-2023  Nexedi SA and Contributors.
 #                          Kirill Smelkov <kirr@nexedi.com>
 #
 # This program is free software: you can Use, Study, Modify and Redistribute
@@ -345,6 +345,8 @@ setup(
         Programming Language :: Python :: 3.7
         Programming Language :: Python :: 3.8
         Programming Language :: Python :: 3.9
+        Programming Language :: Python :: 3.10
+        Programming Language :: Python :: 3.11
         Programming Language :: Python :: Implementation :: CPython
         Programming Language :: Python :: Implementation :: PyPy
         Topic :: Software Development :: Interpreters

tox.ini

 [tox]
 envlist =
-    {py27d,py27,py37,py38d,py38,py39d,py39,pypy,pypy3}-{thread,gevent}
+    {py27d,py27,py37,py38,py39d,py39,py310d,py310,py311d,py311,pypy,pypy3}-{thread,gevent}
 
 
 # ThreadSanitizer
@@ -10,28 +10,31 @@ envlist =
 # (*) PyPy locks its GIL (see RPyGilAcquire) by manually doing atomic cmpxchg
 # and other games, which TSAN cannot see if PyPy itself was not compiled with
 # -fsanitize=thread.
-    {py27d,py27,py37,py38d,py38,py39d,py39           }-{thread       }-tsan
+    {py27d,py27,py37,py38,py39d,py39,py310d,py310,py311d,py311           }-{thread       }-tsan
 # XXX py*-gevent-tsan would be nice to have, but at present TSAN is not
 # effective with gevent, because it does not understand greenlet "thread"
 # switching and so perceives the program as having only one thread where races
 # are impossible. Disabled to save time.
-#   {py27d,py27,py37,py38d,py38,py39d,py39           }-{       gevent}-tsan
+#   {py27d,py27,py37,py38,py39d,py39,py310d,py310,py311d,py311           }-{       gevent}-tsan
 
 
 # AddressSanitizer
 
 # XXX asan does not work with gevent: https://github.com/python-greenlet/greenlet/issues/113
-    {py27d,py27,py37,py38d,py38,py39d,py39,pypy,pypy3}-{thread       }-asan
+    {py27d,py27,py37,py38,py39d,py39,py310d,py310,py311d,py311,pypy,pypy3}-{thread       }-asan
 
 [testenv]
 basepython =
     py27d:  python2.7-dbg
     py27:   python2.7
     py37:   python3.7
-    py38d:  python3.8-dbg
     py38:   python3.8
     py39d:  python3.9-dbg
     py39:   python3.9
+    py310d: python3.10-dbg
+    py310:  python3.10
+    py311d: python3.11-dbg
+    py311:  python3.11
     pypy:   pypy
     pypy3:  pypy3
 
@@ -69,5 +72,5 @@ commands=
 # asan/tsan: tell pytest not to capture output - else it is not possible to see
 # reports from sanitizers because they crash tested process on error.
 # likewise for python debug builds.
-        asan,tsan,py{27,38,39}d: -s    \
+        asan,tsan,py{27,39,310,311}d: -s    \
         gpython/ golang/