MNT: Drop support for Python 3.6 and 3.7.

TST: Update test workflows.

TST: Use built-in cancel.

.github/workflows/ci_workflows.yml

@@ -8,6 +8,10 @@ on:
     # * is a special character in YAML so you have to quote this string
     - cron: '0 6 * * 2'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   jref: "https://ssb.stsci.edu/trds_open/jref"
 
@@ -17,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Check base branch
-      uses: actions/github-script@v3
+      uses: actions/github-script@v6
       if: github.event_name == 'pull_request'
       with:
         script: |
@@ -36,11 +40,11 @@ jobs:
     needs: initial_checks
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 0
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: '3.x'
     - name: Lint with flake8
@@ -63,14 +67,14 @@ jobs:
     needs: initial_checks
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 0
         lfs: true
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
-        python-version: '3.7'
+        python-version: '3.8'
     - name: Install and build
       run: |
         python -m pip install --upgrade pip setuptools wheel
@@ -84,14 +88,14 @@ jobs:
     needs: initial_checks
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 0
         lfs: true
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
-        python-version: '3.8'
+        python-version: '3.10'
     - name: Install and build
       run: |
         python -m pip install --upgrade pip setuptools wheel
@@ -106,9 +110,9 @@ jobs:
     needs: initial_checks
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v3
       with:
         python-version: '3.x'
     - name: Install and build

.github/workflows/codeql-analysis.yml

@@ -18,6 +18,10 @@ on:
     # The branches below must be a subset of the branches above
     branches: [ master ]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   analyze:
     name: Analyze
@@ -33,11 +37,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -48,7 +52,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -62,4 +66,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/open_actions.yml

@@ -8,6 +8,10 @@ on:
     types:
     - opened
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   triage:
     runs-on: ubuntu-latest
@@ -18,12 +22,12 @@ jobs:
       with:
         repo-token: "${{ secrets.GITHUB_TOKEN }}"
     - name: 'Comment Draft PR'
-      uses: actions/github-script@v3
+      uses: actions/github-script@v6
       if: github.event.pull_request.draft == true
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         script: |
-          github.issues.createComment({
+          await github.rest.issues.createComment({
             issue_number: context.issue.number,
             owner: context.repo.owner,
             repo: context.repo.repo,

.readthedocs.yml

@@ -2,14 +2,20 @@
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 version: 2
 
+build:
+  os: ubuntu-20.04
+  apt_packages:
+    - graphviz
+  tools:
+    python: "3.9"
+
 sphinx:
   builder: html
   configuration: doc/source/conf.py
   fail_on_warning: true
 
 # Set the version of Python and requirements required to build your docs
 python:
-  version: 3.8
   install:
     - method: pip
       path: .

doc/source/index.rst

@@ -13,8 +13,6 @@ Different ways to install the latest release of this package::
 
     conda install acstools -c conda-forge
 
-    conda install acstools -c http://ssb.stsci.edu/astroconda
-
 To install the development version of this package::
 
     pip install git+https://github.com/spacetelescope/acstools
@@ -32,7 +30,7 @@ To install the development version of this package::
 
 .. note::
 
-    Python 2 is no longer supported. Please use Python 3.6 or later.
+    Python 2 is no longer supported. Please use Python 3.8 or later.
 
 .. toctree::
    :maxdepth: 2

setup.cfg

@@ -36,7 +36,7 @@ install_requires =
     beautifulsoup4
     requests
     PyYAML
-python_requires = >=3.6
+python_requires = >=3.8
 
 [options.extras_require]
 all =