chore: add Python 3.10-3.13 (#40)

* ci: exclude paths from flake8 checks

* test: add modern python versions

* ci: update GHA test matrix

* ci: drop 2.7 from GHA test matrix

No longer available for arm64

* ci: use ubuntu-22.04 for py36/37 tests

* ci: ubuntu 20.04 for 3.6, drop mac/win tests of 3.6-3.7

.github/workflows/pr-checks.yml

@@ -41,8 +41,13 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['2.7', '3.6', '3.7', '3.8', '3.9']
-
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        include:
+          - platform: ubuntu-20.04
+            python-version: 3.6
+          - platform: ubuntu-22.04
+            python-version: 3.7
+
     steps:
     - name: Checkout repository
       uses: actions/checkout@v2

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py{27,36,37,38,39}-{linux,macos,windows}
+envlist = py{27,36,37,38,39,310,311,312,313}-{linux,macos,windows}
 
 [gh-actions]
 python =
@@ -13,7 +13,11 @@ python =
 	3.7: py37
 	3.8: py38
 	3.9: py39
-
+	3.10: py310
+	3.11: py311
+	3.12: py312
+	3.13: py313
+
 [gh-actions:env]
 PLATFORM =
     ubuntu-latest: linux
@@ -36,5 +40,5 @@ max-line-length = 280
 ignore = 
         W191,E101,E127,E202,W293,W391,W291,E201,E203,E124,E128,E222,E226,E221,
         E228,E241,E261,E265,E266,E302,E303,E306,W605,E711,E713,E731
-
+exclude = .git,.venv,.tox,.github