Drop Py3.7, add Py3.12 (#164)

Author: Conengmo

.github/workflows/test_code.yml

@@ -11,16 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.11"]
-        # We only run latest Python on macOS and Windows to save resources.
-        include:
-          - os: ubuntu-latest
-            python-version: "3.8"
-          - os: ubuntu-latest
-            python-version: "3.9"
-          - os: ubuntu-latest
-            python-version: "3.10"
+        os: [ubuntu-latest, windows-latest]
+        python-version: ["3.8", "3.12"]
 
     steps:
     - uses: actions/checkout@v3

setup.py

@@ -53,11 +53,11 @@ def walk_subpkg(name):
     keywords="data visualization",
     classifiers=[
         "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",
+        "Programming Language :: Python :: 3.12",
         "License :: OSI Approved :: MIT License",
         "Development Status :: 5 - Production/Stable",
     ],