Merge actions-hlint-setup repo as /hlint-setup

History context:
1. https://github.com/rwe/actions-hlint-setup
2. ndmitchell/hlint#1311
3. haskell#81
4. current merger of "unrelated repo histories", current branch
& further merge request

hlint-setup/.gitattributes

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+dist/** generated linguist-vendored -diff

hlint-setup/.github/dependabot.yml

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+version: 2
+updates:
+  # Enable version updates for npm
+  - package-ecosystem: "npm"
+    # Look for `package.json` and `lock` files in the `root` directory
+    directory: "/"
+    # Check the npm registry for updates every day (weekdays)
+    schedule:
+      interval: "daily"

hlint-setup/.github/workflows/test.yml

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+name: test
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - 'releases/*'
+
+jobs:
+  # unit tests
+  unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: yarn
+    - run: yarn test
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: yarn
+    - run: yarn compile
+    - run: yarn package
+    - uses: ./
+    - run: hlint --version

hlint-setup/.gitignore

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+node_modules/
+
+# Editors
+.vscode/
+.idea/
+*.iml
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Yarn Integrity file
+.yarn-integrity

hlint-setup/.nvmrc

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+lts/erbium

hlint-setup/LICENSE

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+MIT License
+
+Copyright (c) 2020 Robert Estelle
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

hlint-setup/README.md

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+# rwe/actions-hlint-setup
+
+GitHub Action: Set up hlint
+
+Downloads and a binary HLint release from [@ndmitchell/hlint](https://github.com/ndmitchell/hlint).
+
+The release is cached using [@actions/tool-cache](https://github.com/actions/tool-cache) and is added to `PATH`.
+
+See also [rwe/actions-hlint-run](https://github.com/rwe/actions-hlint-run), which will run hlint and format its output for GitHub annotations.
+
+## Inputs
+
+* `version`: The HLint version to download. Defaults to `3.1.6`.
+
+## Outputs
+
+* `hlint-dir`: Resulting directory containing the hlint executable
+* `hlint-bin`: Location of the hlint executable
+* `version`: Version of the hlint tool (same as input, if provided)
+
+## Example
+
+```yaml
+name: lint
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - 'releases/*'
+
+jobs:
+  hlint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: 'Set up HLint'
+      uses: rwe/actions-hlint-setup@v1
+      with:
+        version: '3.1.6'
+
+    - name: 'Run HLint'
+      uses: rwe/actions-hlint-run@v1
+      with:
+        path: src/
+        fail-on: warning
+```

hlint-setup/action.yml

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+name: 'Set up HLint'
+description: 'Cached download of hlint binary release'
+inputs:
+  version:
+    description: 'hlint version'
+    required: true
+    default: '3.1.6'
+outputs:
+  hlint-dir:
+    description: 'Directory containing the hlint executable'
+  hlint-bin:
+    description: 'Location of the hlint executable'
+  version:
+    description: 'Version of the hlint tool (same as input, if provided)'
+runs:
+  using: 'node12'
+  main: 'dist/index.js'
+branding:
+  icon: 'arrow-down-circle'
+  color: blue