Full rewrite

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Call script with parameters ...
+2. Type ...
+3. Wait for ... seconds
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. MacOS]
+ - make version (make --version)
+ - Script version
+ - copy/paste output
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/bash_unit.yml

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+name: bash_unit CI
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  ubuntu:
+    runs-on: ubuntu-latest
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: install Ubuntu dependencies with sudo apt install -y
+      run: sudo apt install -y gawk
+
+    - name: Unit testing with bash_unit
+      run: ./run_tests.sh
+
+  macos:
+    runs-on: macos-latest
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]') && contains(toJSON(github.event.commits.*.message), '[macos]')"
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: install MacOS dependencies with brew install
+      run: brew install gawk
+
+    - name: Unit testing with bash_unit
+      run: ./run_tests.sh

.github/workflows/shellcheck.yml

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+name: Shellcheck CI
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-latest
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Check for code quality errors
+      run: ./run_linter.sh