Issue #170: Deprecate false Python 3.9 support

Author: Mark2000

.github/workflows/commit_checks.yml

@@ -41,10 +41,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python 3.10
+      - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}

pyproject.toml

@@ -11,7 +11,7 @@ authors = [
 ]
 description = "RL environments and tools for spacecraft autonomy research, built on Basilisk. Developed by the AVS Lab."
 readme = "README.md"
-requires-python = ">=3.9.0"
+requires-python = ">=3.10.0"
 license = { text = "MIT" }
 dependencies = [
     "Deprecated",