Some GitHub workflows

.github/workflows/linux.yml

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+name: ubuntu
+
+on:
+    push:
+        branches:
+            - '*'
+        tags-ignore:
+            - '*'
+        pull_request:
+
+jobs:
+    perl:
+        runs-on: ${{ matrix.os }}
+        strategy:
+          matrix:
+            os:
+                - ubuntu-16.04
+                - ubuntu-18.04
+                - ubuntu-20.04
+            perl-version:
+                - '5.8'
+                - '5.10'
+                - '5.12'
+                - '5.14'
+                - '5.16'
+                - '5.18'
+                - '5.20'
+                - '5.22'
+                - '5.24'
+                - '5.26'
+                - '5.28'
+                - '5.30'
+                - '5.32'
+                - 'latest'
+
+        container:
+            image: perl:${{ matrix.perl-version }}
+
+        steps:
+            - uses: actions/checkout@v2
+            - name: Platform check
+              run: uname -a
+            - name: Perl version check
+              run: perl -V
+            - name: Prepare cpan
+              run: |
+                openssl version
+                cpan App::a2p App::find2perl Make MIME::Parser DB_File
+            - name: Install
+              run: cpan .
+            - name: Run tests
+              run: |
+                perl Makefile.PL
+                make test

.github/workflows/macos.yml

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+name: macos
+
+on:
+    push:
+        branches:
+            - '*'
+        tags-ignore:
+            - '*'
+        pull_request:
+
+jobs:
+    perl:
+        runs-on: macOS-latest
+
+        steps:
+            - uses: actions/checkout@v2
+            - name: Platform check
+              run: uname -a
+            - name: Set up Perl
+              run: brew install perl
+            - name: Perl version check
+              run: perl -V
+            - name: Prepare cpan
+              run: |
+                openssl version
+                cpan App::a2p App::find2perl Make MIME::Parser DB_File
+            - name: Install
+              run: cpan .

.github/workflows/windows.yml

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+name: windows
+
+on:
+    push:
+        branches:
+            -
+        tags-ignore:
+            -
+        pull_request:
+
+jobs:
+    perl:
+        runs-on: ${{ matrix.os }}
+        strategy:
+          matrix:
+            os:
+                - windows-2019
+                - windows-2016
+
+        steps:
+            - uses: actions/checkout@v2
+            - name: Set up Perl
+              run: |
+                choco install strawberryperl
+                echo "##[add-path]C:\strawberry\c\bin;C:\strawberry\perl\site\bin;C:\strawberry\perl\bin"
+            - name: Perl version
+              run: perl -V
+            - name: Install
+              run: cpan .