Merge remote-tracking branch 'upstream/master' into 8.0.x.patch

.coveragerc

@@ -35,6 +35,9 @@ exclude_lines =
     # Don't complain about ellipsis (exception classes, typing overloads etc):
     \.\.\.
 
+    # Ignore abstract methods
+    @(abc\.)?abstractmethod
+
 fail_under=0
 ignore_errors = False
 omit =

.github/workflows/test_fast.yml

@@ -20,7 +20,7 @@ jobs:
       fail-fast: false # Don't let a failed MacOS run stop the Ubuntu runs
       matrix:
         os: ['ubuntu-latest']
-        python-version: ['3.7', '3.8', '3.9']
+        python-version: ['3.7', '3.8', '3.9', '3.10']
         include:
           - os: 'macos-latest'
             python-version: '3.7'

.github/workflows/test_functional.yml

@@ -45,6 +45,13 @@ jobs:
         platform: ['_local_background* _local_at*']
         # NOTE: includes must define ALL of the matrix values
         include:
+          # latest python
+          - name: 'py-3.10'
+            os: 'ubuntu-latest'
+            python-version: '3.10'
+            test-base: 'tests/f'
+            chunk: '1/4'
+            platform: '_local_background*'
           # tests/k
           - name: 'flaky'
             os: 'ubuntu-latest'

.github/workflows/test_manylinux.yml

@@ -34,7 +34,7 @@ jobs:
       matrix:
         manylinux: ['1']
         os: ['ubuntu-18.04']  # run on the oldest linux we have access to
-        python-version: ['3.7', '3.8', '3.9']
+        python-version: ['3.7', '3.8', '3.9', '3.10']
 
     steps:
       - name: Checkout