Add support for Python 3.9. (#99)

* Add support for Python 3.9.
* Configuring for zope-product
* Apply isort rules.
* Make sure tests can run in parallel.

.editorconfig

@@ -0,0 +1,39 @@
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
+#
+# EditorConfig Configuration file, for more details see:
+# http://EditorConfig.org
+# EditorConfig is a convention description, that could be interpreted
+# by multiple editors to enforce common coding conventions for specific
+# file types
+
+# top-most EditorConfig file:
+# Will ignore other EditorConfig files in Home directory or upper tree level.
+root = true
+
+
+[*]  # For All Files
+# Unix-style newlines with a newline ending every file
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+# Set default charset
+charset = utf-8
+# Indent style default
+indent_style = space
+# Max Line Length - a hard line wrap, should be disabled
+max_line_length = off
+
+[*.{py,cfg,ini}]
+# 4 space indentation
+indent_size = 4
+
+[*.{yml,zpt,pt,dtml}]
+# 2 space indentation
+indent_size = 2
+
+[{Makefile,.gitmodules}]
+# Tab indentation (no size specified, but view as 4 spaces)
+indent_style = tab
+indent_size = unset
+tab_width = unset

.github/workflows/tests.yml

@@ -0,0 +1,55 @@
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
+name: tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+  schedule:
+    - cron: '0 12 * * 0'  # run once a week on Sunday
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        config:
+        # [Python version, tox env]
+        - ["3.8",   "lint"]
+        - ["2.7",   "py27"]
+        - ["3.5",   "py35"]
+        - ["3.6",   "py36"]
+        - ["3.7",   "py37"]
+        - ["3.8",   "py38"]
+        - ["3.9",   "py39"]
+        - ["3.8",   "coverage"]
+
+    runs-on: ubuntu-latest
+    name: ${{ matrix.config[1] }}
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.config[0] }}
+    - name: Pip cache
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ matrix.config[0] }}-${{ hashFiles('setup.*', 'tox.ini') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-${{ matrix.config[0] }}-
+          ${{ runner.os }}-pip-
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox
+    - name: Test
+      run: tox -e ${{ matrix.config[1] }}
+    - name: Coverage
+      if: matrix.config[1] == 'coverage'
+      run: |
+        pip install coveralls coverage-python-version
+        coveralls --service=github
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,39 +1,24 @@
-*.egg
-*.egg-info
-*.mo
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
+*.egg-info/
+*.profraw
 *.pyc
 *.pyo
 .coverage
 .coverage.*
-.eggs
+.eggs/
 .installed.cfg
 .mr.developer.cfg
-.Python
-.tox
-bin
-build
+.tox/
+__pycache__/
+bin/
+build/
 coverage.xml
-develop-eggs
-dist
-default.profraw
-downloads
-eggs
-htmlcov
-local.cfg
-parts
-src
-var
-/include
-/lib*
-pip-selfcheck.json
+develop-eggs/
+dist/
+docs/_build
+eggs/
+lib/
+lib64
+parts/
 pyvenv.cfg
-/src
-docs/_build/
-
-# VirtualEnv on Windows:
-Include/
-Lib/
-Scripts/
-
-# Editor Backups:
-*~

.meta.toml

@@ -0,0 +1,29 @@
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
+[meta]
+template = "zope-product"
+commit-id = "fa5e2a952a937751fc91774c2c9d2e429a8e02ed"
+
+[python]
+with-appveyor = false
+with-pypy = false
+with-legacy-python = true
+with-docs = false
+with-sphinx-doctests = false
+
+[coverage]
+fail-under = 92
+
+[isort]
+known_first_party = "Products.PluginIndexes, Products.ZCTextIndex, Products.ZCatalog"
+
+[manifest]
+additional-rules = [
+    "include buildout4.cfg",
+    "recursive-include docs *.py",
+    "recursive-include docs *.rst",
+    "recursive-include docs Makefile",
+    "recursive-include src *.png",
+    "recursive-include src *.xml",
+    "recursive-include src *.zpt",
+    ]

CHANGES.rst

@@ -4,7 +4,7 @@ Changelog
 2.0.4 (unreleased)
 ------------------
 
-- Nothing changed yet.
+- Add support for Python 3.9.
 
 
 2.0.3 (2020-09-28)

MANIFEST.in

@@ -1,15 +1,19 @@
+# Generated from:
+# https://github.com/zopefoundation/meta/tree/master/config/zope-product
 include *.rst
 include *.txt
+include buildout.cfg
 include tox.ini
 
-exclude MANIFEST.in
-
-recursive-include Products *.png
-recursive-include Products *.txt
-recursive-include Products *.xml
-recursive-include Products *.zcml
-recursive-include Products *.pt
-recursive-include Products *.zpt
+recursive-include src *.pt
+recursive-include src *.py
+recursive-include src *.rst
+recursive-include src *.txt
+recursive-include src *.zcml
+include buildout4.cfg
 recursive-include docs *.py
 recursive-include docs *.rst
 recursive-include docs Makefile
+recursive-include src *.png
+recursive-include src *.xml
+recursive-include src *.zpt