Fix #333: Drop support for Python 3.7 and 3.8.

Author: tkem

.github/workflows/ci.yml

@@ -8,11 +8,11 @@ permissions:
 jobs:
   main:
     name: Python ${{ matrix.python }}
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        python: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "pypy3.9", "pypy3.10"]
+        python: ["3.9", "3.10", "3.11", "3.12", "3.13", "pypy3.9", "pypy3.10"]
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0

setup.cfg

@@ -16,8 +16,6 @@ classifiers =
     Operating System :: OS Independent
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11