Drop support for Python 3.6 (#50)

Actions is failing on Ubuntu complaining that Python 3.6 is no longer
available. Update the Python action to v4 and drop support for Python 
3.6 since we could have done this a while ago.

Author: leouieda

.github/workflows/pypi.yml

@@ -45,7 +45,7 @@ jobs:
         run: git fetch origin 'refs/tags/*:refs/tags/*'
 
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: "3.10"
 

.github/workflows/style.yml

@@ -25,7 +25,7 @@ jobs:
           persist-credentials: false
 
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: "3.10"
 
@@ -47,7 +47,7 @@ jobs:
           persist-credentials: false
 
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: "3.10"
 

.github/workflows/test.yml

@@ -44,12 +44,12 @@ jobs:
           - macos
           - windows
         python:
-          - "3.6"
+          - "3.7"
           - "3.10"
         cached:
           - true
         include:
-          - python: "3.6"
+          - python: "3.7"
             dependencies: oldest
           - python: "3.10"
             dependencies: latest
@@ -91,7 +91,7 @@ jobs:
         run: git fetch origin 'refs/tags/*:refs/tags/*'
 
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}
 

doc/compatibility.rst

@@ -53,7 +53,5 @@ following releases to ensure compatibility:
     * - **Python version**
       - **Last compatible release**
     * - 3.6
-      - 1.0.0
-    * - 3.7
-      - 1.X.0 (planned for late 2022)
+      - 0.4.0
 

doc/install.rst

@@ -39,7 +39,7 @@ There are different ways to install Ensaio:
 Which Python?
 -------------
 
-You'll need **Python >= 3.6** (see :ref:`python-versions` for information on
+You'll need **Python >= 3.7** (see :ref:`python-versions` for information on
 Python version compatibility).
 
 We recommend using the

setup.cfg

@@ -23,7 +23,6 @@ classifiers =
     Topic :: Scientific/Engineering
     Topic :: Software Development :: Libraries
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
@@ -38,7 +37,7 @@ project_urls =
 [options]
 zip_safe = True
 packages = find:
-python_requires = >=3.6
+python_requires = >=3.7
 install_requires =
     pooch>=1.5.0,<2.0.0