feat: convert to a composite action

This also adds the following features:

- Use `--prefer-stable` with lowest dependencies (#178)
- Allow use of a custom cache key (#167)
- Allow ability to ignore the cache

Fixes: #187, #161, #152, #79

.editorconfig

@@ -7,6 +7,10 @@ root = true
 [*]
 end_of_line = lf
 insert_final_newline = true
+trim_trailing_whitespace = true
 charset = utf-8
 indent_style = space
+indent_size = 4
+
+[*.{yml,yaml}]
 indent_size = 2

.gitattributes

@@ -1 +1,13 @@
-dist/** -diff linguist-generated=true
+/.editorconfig              export-ignore
+/.gitattributes             export-ignore
+/.github/                   export-ignore
+/.gitignore                 export-ignore
+/CHANGELOG.md               export-ignore
+/CODE_OF_CONDUCT.md         export-ignore
+/composer.json              export-ignore
+/composer.lock              export-ignore
+/CONTRIBUTING.md            export-ignore
+/docs/                      export-ignore
+/SECURITY.md                export-ignore
+/subdirectory/              export-ignore
+/tests/                     export-ignore

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @ramsey

.github/ISSUE_TEMPLATE/Bug_Report.md

@@ -0,0 +1,35 @@
+---
+name: Bug Report
+about: Create a bug report to help us improve
+labels: bug
+assignees:
+---
+<!--- Provide a general summary of the issue you're having in the title above. -->
+
+## Description
+<!-- Provide a short and clear description of the bug. -->
+
+## Steps to reproduce
+<!--
+Provide steps to reproduce the behavior you are experiencing. Please try to keep
+this as short as possible. If able, create a reproducible script outside of any
+framework you are using. This will help us to quickly debug the issue.
+-->
+1. Step one...
+2. Step two...
+3. Step three...
+
+## Expected behavior
+<!-- Provide a short and clear description of what you expect to happen. -->
+
+## Screenshots or output
+<!-- If applicable, add screenshots or program output to help explain your problem. -->
+
+## Environment details
+<!-- Provide details about the system where you're using this package. -->
+- version of this package: *e.g. 1.0.0, 1.0.1, 1.1.0*
+- PHP version: *e.g. 7.3.16, 7.4.4*
+- OS: *e.g. Windows 10, Linux (Ubuntu 18.04.1), macOS Catalina (10.15.3)*
+
+## Additional context
+<!-- Provide any additional context that may help us debug the problem. -->

.github/ISSUE_TEMPLATE/Feature_Request.md

@@ -0,0 +1,31 @@
+---
+name: Feature Request
+about: Suggest a feature for this project
+labels: enhancement
+assignees:
+---
+<!--- Provide a general summary of your feature request in the title above. -->
+
+<!-- Give your feature a short title here. -->
+## My feature title
+<!-- Provide a short and clear description of the feature. -->
+
+## Background/problem
+<!--
+Provide background details to show why this feature is necessary. Is your
+feature request related to a problem? If so, please describe the problem.
+Provide as much detail as possible.
+-->
+
+## Proposal/solution
+<!--
+Provide a short and clear description of the solution you'd like. Include code
+examples, if possible. Feel free to use pseudo-code to show how you think the
+feature should work.
+-->
+
+## Alternatives
+<!-- Describe any alternative solutions or features you've considered. -->
+
+## Additional context
+<!-- Please provide any other context or code examples that may help. -->

.github/ISSUE_TEMPLATE/Question.md

@@ -0,0 +1,19 @@
+---
+name: Question
+about: Ask a question about how to use this library
+labels: question
+assignees:
+---
+<!--- Provide a general summary of your question in the title above. -->
+
+<!-- Write your question here. -->
+## How do I... ?
+<!-- Provide any additional context that may help us answer your question. -->
+
+## Example code
+<!--
+If your question is about code that you've written, provide a short and clear
+example of what you're trying to accomplish. Try to keep this as short as
+possible. If able, please provide an example outside of any framework you are
+using. This will help us to quickly respond to your question.
+-->

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1 @@
+blank_issues_enabled: false

.github/pull_request_template.md

@@ -0,0 +1,27 @@
+<!--- Provide a general summary of your changes in the title above. -->
+
+## Description
+<!--- Describe your changes in detail. -->
+
+## Motivation and context
+<!--- Why is this change required? What problem does it solve? -->
+<!--- If it fixes an open issue, please link to the issue here. -->
+
+## How has this been tested?
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, and the tests you ran to -->
+<!--- see how your change affects other areas of the code, etc. -->
+
+## Types of changes
+<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to change)
+
+## PR checklist
+<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+- [ ] My change requires a change to the documentation.
+- [ ] I have updated the documentation accordingly.
+- [ ] I have read the **CONTRIBUTING.md** document.
+- [ ] I have added tests to cover my changes.

.github/workflows/continuous-integration.yml

@@ -1,29 +1,31 @@
-name: "CI"
+# GitHub Actions Documentation: https://docs.github.com/en/actions
 
-on:
-  pull_request:
-  push:
-    branches:
-      - "v[0-9]+"
+name: "build"
 
-jobs:
+on: ["pull_request", "push"]
 
-  # Make sure build/ci work properly.
-  build:
-    name: "Build"
+jobs:
+  test:
+    name: "Expect Tests"
     runs-on: "ubuntu-latest"
     steps:
-      - uses: "actions/checkout@v2"
-      - uses: "shivammathur/setup-php@v2"
+      - name: "Checkout repository"
+        uses: "actions/checkout@v2"
+      - name: "Install expect"
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install expect
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@v2"
         with:
           php-version: "latest"
-      - run: "npm install"
-      - run: "npm run all"
-      - uses: "codecov/codecov-action@v1"
+          tools: "composer:v2"
+          coverage: "none"
+      - name: "Run expect tests"
+        run: "composer test"
 
-  # Make sure the action works on a clean machine without building.
-  test:
-    name: "Test"
+  run:
+    name: "Run Action"
     runs-on: "${{ matrix.operating-system }}"
     strategy:
       matrix:
@@ -35,14 +37,31 @@ jobs:
           - "highest"
           - "locked"
         composer-options:
-          - "--working-dir subdirectory"
+          - "--ignore-platform-reqs"
+          - ""
+        working-directory:
+          - "subdirectory"
+          - ""
+        ignore-cache:
+          - "yes"
+          - ""
+        custom-cache-key:
+          - "my-super-custom-cache-key"
           - ""
     steps:
-      - uses: "actions/checkout@v2"
-      - uses: "shivammathur/setup-php@v2"
+      - name: "Checkout repository"
+        uses: "actions/checkout@v2"
+      - name: "Set up PHP"
+        uses: "shivammathur/setup-php@v2"
         with:
           php-version: "latest"
-      - uses: ./
+          tools: "composer:v2"
+          coverage: "none"
+      - name: "Run composer-install action"
+        uses: ./
         with:
           dependency-versions: "${{ matrix.dependency-versions }}"
           composer-options: "${{ matrix.composer-options }}"
+          working-directory: "${{ matrix.working-directory }}"
+          ignore-cache: "${{ matrix.ignore-cache }}"
+          custom-cache-key: "${{ matrix.custom-cache-key }}"