Upgrade minimum Python version to 3.10

BREAKING CHANGE: Python 3.8 and 3.9 are no longer supported.

Changes:
- pyproject.toml: requires-python ">=3.8" -> ">=3.10"
- Added Python 3.10, 3.11, 3.12 classifiers
- Updated tool configurations:
  - ruff: target-version "py37" -> "py310"
  - mypy: python_version "3.7" -> "3.10"
  - pylint: py-version "3.7" -> "3.10"
- CI: Updated pytest.yml to test on Python 3.10, 3.11, 3.12

Rationale:
- Python 3.8 reached EOL in October 2024
- Python 3.9 reaches EOL in October 2025
- Python 3.10+ enables modern syntax (PEP 604 union types)
- Used in new modernization features (exceptions.py uses | syntax)
- Aligns with project modernization goals
- HPC/cluster environments typically run modern Python versions

All 25 tests passing on Python 3.11.

Author: claude

.github/workflows/pytest.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3

pyproject.toml

@@ -13,9 +13,12 @@ authors = [
 ]
 description = "Util for benchmarking algorithms."
 readme = "README.rst"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 classifiers = [
     "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "License :: OSI Approved :: MIT License",
     "Development Status :: 3 - Alpha",
 ]
@@ -70,7 +73,7 @@ extend-ignore = [
     "PT004",   # Incorrect, just usefixtures instead.
     "RUF009",  # Too easy to get a false positive
 ]
-target-version = "py37"
+target-version = "py310"
 src = ["src"]
 unfixable = ["T20", "F841"]
 exclude = []
@@ -79,7 +82,7 @@ exclude = []
 [tool.mypy]
 files = ["src", "tests"]
 mypy_path = ["$MYPY_CONFIG_FILE_DIR/src"]
-python_version = "3.7"
+python_version = "3.10"
 warn_unused_configs = true
 show_error_codes = true
 enable_error_code = ["ignore-without-code", "redundant-expr", "truthy-bool"]
@@ -96,7 +99,7 @@ ignore_missing_imports = true
 
 
 [tool.pylint]
-py-version = "3.7"
+py-version = "3.10"
 jobs = "0"
 reports.output-format = "colorized"
 similarities.ignore-imports = "yes"