Misc. clean up: Development dependencies, doc build action, tox for d…

…oc builds, pre-commit hook updates (#2814)

* docs: move build dependencies to tox environment

* provider: mark wheel as unsafe package

* Fix tox default configuration

* pre-commit: update hooks

* actions: add workflow for doc sanity build

* isort: update configuration to v5

* flake8: fix issues

.github/workflows/docs.yml

@@ -0,0 +1,29 @@
+name: Documentation
+
+on:
+  push:
+    paths:
+      - 'docs/**'
+      - '.github/workflows/docs.yml'
+    branches:
+      - master
+  pull_request:
+    paths:
+      - 'docs/**'
+      - '.github/workflows/docs.yml'
+    branches:
+      - '**'
+
+jobs:
+  docs:
+    name: Documentation Build
+    runs-on: Ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - name: Install tox
+        run: pip install tox
+      - name: Build documentation
+        run: tox -e doc

.pre-commit-config.yaml

@@ -1,23 +1,23 @@
 repos:
   - repo: https://github.com/psf/black
-    rev: stable
+    rev: 19.10b0
     hooks:
       - id: black
 
   - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.7.8
+    rev: 3.8.3
     hooks:
       - id: flake8
 
   - repo: https://github.com/timothycrosley/isort
-    rev: 4.3.21-2
+    rev: 5.4.2
     hooks:
       - id: isort
         additional_dependencies: [toml]
         exclude: ^.*/?setup\.py$
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v2.3.0
+    rev: v3.2.0
     hooks:
       - id: trailing-whitespace
         exclude: ^tests/.*/fixtures/.*