test with python3.11 and python3.13

Author: bashir-abdelwahed

setup.py

@@ -15,12 +15,12 @@
     Development Status :: 5 - Production/Stable
     Programming Language :: Python
     Programming Language :: Python :: 3
-    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 :: 3.12
+    Programming Language :: Python :: 3.13
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: Implementation :: PyPy
@@ -112,7 +112,7 @@ def run_tests(self):
     platforms=['any'],
     classifiers=classifiers,
     license='BSD',
-    python_requires=">=3.6",
+    python_requires=">=3.9",
     install_requires=[],
     tests_require=reqs('test.txt'),
     cmdclass={'test': pytest},

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    {pypy3,3.12,3.8,3.9,3.10}-unit
+    {pypy3,3.9,3.10,3.11,3.12,3.13}-unit
     flake8
     apicheck
     pydocstyle
@@ -20,9 +20,9 @@ commands = py.test -xv --cov=vine --cov-report=xml --no-cov-on-fail t/unit {posa
 basepython =
     flake8,apicheck,linkcheck,pydocstyle: python3.10
     pypy3: pypy3.10
-    3.8: python3.8
     3.9: python3.9
     3.10: python3.10
+    3.11: python3.11
     3.12: python3.12
 
 [testenv:apicheck]

vine/synchronization.py

@@ -32,6 +32,7 @@ def all_done():
     Note that you cannot add new promises to a barrier after
     the barrier is fulfilled.
     """
+
     __slots__ = (
         'p', 'args', 'kwargs', '_value', 'size',
         'ready', 'reason', 'cancelled', 'finalized',