Merge pull request #151 from chrishavlin/drop_py39

bump min python to 3.10

.github/workflows/test_and_deploy.yml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.9', '3.10', '3.11']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
       - uses: actions/checkout@v4

.readthedocs.yaml

@@ -9,7 +9,7 @@ version: 2
 build:
   os: ubuntu-20.04
   tools:
-    python: "3.8"
+    python: "3.10"
     # You can also specify other tool versions:
     # nodejs: "16"
     # rust: "1.55"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 88
-target-version = ['py39']
+target-version = ['py310']
 
 [tool.isort]
 profile = "black"

setup.cfg

@@ -39,7 +39,7 @@ install_requires =
     qtpy
     unyt
     yt>=4.0.1
-python_requires = >=3.9
+python_requires = >=3.10
 package_dir =
     =src
 setup_requires =

tox.ini

@@ -1,12 +1,12 @@
 # For more information about tox, see https://tox.readthedocs.io/en/latest/
 [tox]
-envlist = py{39,310,311}-{linux,macos,windows}
+envlist = py{310,311,312}-{linux,macos,windows}
 
 [gh-actions]
 python =
-    3.9: py39
     3.10: py310
     3.11: py311
+    3.12: py312
 
 [gh-actions:env]
 PLATFORM =