Switch to python 3.13 (#693)

Co-authored-by: Patrick Kanzler <4189642+patkan@users.noreply.github.com>

.github/workflows/pythonpackage-windows.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: ['3.11', '3.12']
+        python-version: ['3.11', '3.12', '3.13']
 
     steps:
     - uses: actions/checkout@v4

.github/workflows/pythonpackage.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
     - uses: actions/checkout@v4

setup.cfg

@@ -24,6 +24,7 @@ classifiers =
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
     Programming Language :: Python :: Implementation :: CPython
     Topic :: Software Development :: Libraries :: Python Modules
     Topic :: Office/Business :: Financial :: Point-Of-Sale

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py38, py39, py310, py311, docs, flake8
+envlist = py38, py39, py310, py311, py312, py313, docs, flake8
 
 [gh-actions]
 python =
@@ -11,6 +11,7 @@ python =
     3.10: py310
     3.11: py311
     3.12: py312
+    3.13: py313
 
 [testenv]
 deps = jaconv