GH actions: run all jobs

Author: kmike

.github/workflows/tests.yml

@@ -15,6 +15,7 @@ jobs:
       matrix:
         python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10"]
         os: [ubuntu-latest, macos-latest, windows-latest]
+      fail-fast: false
 
     steps:
       - uses: "actions/checkout@v2"