Drop EOL Python 3.7, Bump PyPy to 3.9 (#106)

.github/workflows/workflow.yml

@@ -37,7 +37,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.7"
+          python-version: "3.8"
           cache: pip
           cache-dependency-path: |
             .github/workflows/workflow.yml
@@ -68,12 +68,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7',  '3.8', '3.9', '3.10', '3.11', 'pypy3.8']
+        python-version: ['pypy3.9', '3.8', '3.9', '3.10', '3.11']
         sphinx-version: ['>=4,<5', '>=5,<6', '>=6a0,<7']
         os: [windows-latest, macos-latest, ubuntu-latest]
-        exclude:
-          # Sphinx 6 supports 3.8+
-          - { python-version: '3.7', sphinx-version: '>=6a0,<7' }
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}

.readthedocs.yml

@@ -1,7 +1,11 @@
 version: 2
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
 python:
-  version: 3
   install:
       - method: pip
         path: .

setup.py

@@ -27,7 +27,6 @@
         "License :: OSI Approved :: BSD License",
         "Natural Language :: English",
         "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
@@ -39,5 +38,5 @@
         "Topic :: Text Processing",
         "Topic :: Utilities",
     ],
-    python_requires=">=3.7",
+    python_requires=">=3.8",
 )