Bump python version and updated build scripts (#54)

Dropped support for Python 3.7 and 3.8.
3.7 is EOL and 3.9 implemented better typing hinting.
Updated github actions.
Updated readthedocs config.

.github/workflows/python-build.yml

@@ -12,12 +12,12 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
         os: [macos-latest, windows-latest]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies

.github/workflows/python-stylecheck.yml

@@ -15,12 +15,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.7']
+        python-version: ['3.9']
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies

.github/workflows/python-unittests.yml

@@ -16,12 +16,12 @@ jobs:
     continue-on-error: true
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
         os: [macos-latest, windows-latest, ubuntu-latest]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies

.readthedocs.yml

@@ -1,9 +1,13 @@
 version: 2
 
 build:
-  os: ubuntu-20.04
+  os: ubuntu-22.04
   tools:
-    python: "3.9"
-  jobs:
-    pre_build:
-      - pip install -e .[docs]
+    python: 3.9
+
+python:
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs

setup.cfg

@@ -15,7 +15,7 @@ platforms = any
 [options]
 packages = find:
 zip_safe = False
-python_requires = ~=3.6
+python_requires = ~=3.9
 install_requires =
     numpy ~= 1.17
     mutf8 ~= 1.0