chore: bring repo more in line with my other repos

.gitattributes

@@ -1,15 +1,24 @@
 # Set the default behavior, in case people don't have core.autocrlf set.
 * text eol=lf
+*.php text diff=php
+*.md text diff=markdown
 
 # Ignore all test and documentation with "export-ignore".
-/.github                  export-ignore
-/.gitattributes           export-ignore
-/.gitignore               export-ignore
-/.scrutinizer.yml         export-ignore
-/.php-cs-fixer.dist.php   export-ignore
-/tests                    export-ignore
-/composer.lock            export-ignore
-/phpstan.neon             export-ignore
-/phpunit.xml              export-ignore
-/renovate.json            export-ignore
-/psalm.xml                export-ignore
+/.github                   export-ignore
+/tests                     export-ignore
+/.gitattributes            export-ignore
+/.gitignore                export-ignore
+/.php-cs-fixer.dist.php    export-ignore
+/.scrutinizer.yml          export-ignore
+/backward-compatibility.md export-ignore
+/CHANGELOG.md              export-ignore
+/CODE_OF_CONDUCT.md        export-ignore
+/composer.lock             export-ignore
+/CONTRIBUTING.md           export-ignore
+/phpstan.neon              export-ignore
+/phpstan-baseline.neon     export-ignore
+/phpunit.xml               export-ignore
+/psalm.xml                 export-ignore
+/psalm-baseline.xml        export-ignore
+/rector.php                export-ignore
+/renovate.json             export-ignore

.github/ISSUE_TEMPLATE/1-bug_report.yml

@@ -0,0 +1,58 @@
+name: Bug Report
+description: Existing feature does not behave as expected.
+labels: [ "bug", "unverified" ]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Before reporting a bug, make sure Numverify is up-to-date and the problem is/was not reported already.
+  - type: textarea
+    id: problem-description
+    attributes:
+      label: Problem description
+      description: Please describe the problem you have encountered
+    validations:
+      required: true
+  - type: textarea
+    id: minimal-reproducer
+    attributes:
+      label: Minimal Reproducer
+      description: |
+        Please provide a minimal code snippet that should be run to reproduce the problem.
+
+        If relevant, provide the expected output, the actual output and/or the error that occurred, if any.
+
+        Please use markdown syntax for each code snippet.
+    validations:
+      required: true
+  - type: input
+    id: version
+    attributes:
+      label: Library Version
+      description: Which version of Numverify is being run? (in X.Y.Z format)
+    validations:
+      required: true
+  - type: input
+    id: php-version
+    attributes:
+      label: PHP version
+      description: Which PHP version is Numverify being run on?
+    validations:
+      required: true
+  - type: dropdown
+    id: run-method
+    attributes:
+      label: How do you run Numverify?
+      multiple: false
+      options:
+        - Composer package
+        - Manual installation
+    validations:
+      required: true
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Contribution Checks
+      options:
+        - label: I have verified whether this problem has already been reported.
+          required: false

.github/ISSUE_TEMPLATE/2-feature_request.yml

@@ -0,0 +1,23 @@
+name: Feature Request
+description: I have a suggestion for a new feature (and possibly want to implement it).
+labels: [ "enhancement", "unverified" ]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        > [!IMPORTANT]
+        > Before requesting a new feature, make sure your version of Numverify is up-to-date.
+  - type: textarea
+    id: feature-request
+    attributes:
+      label: Feature Request
+      description: Please describe the feature you would like to see implemented.
+    validations:
+      required: true
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Contribution Checks
+      options:
+        - label: I have verified whether this feature request was already discussed.
+          required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Support question?
+    url: https://github.com/ericsizemore/numverify-api-client-php/discussions/categories/q-a
+    about: If you have any questions about configuring or using Numverify, please open a new Q&A discussion.

.github/pull_request_template.md

@@ -0,0 +1,28 @@
+# Pull Request
+<!-- 
+PR title needs to be prefixed with a conventional commit type
+(chore,ci,deprecate,docs,feat,fix,refactor,revert)
+
+It should also be brief and descriptive for a good changelog entry
+
+examples: "feat: add new implementation" or "fix: remove unused imports"
+-->
+
+## Proposed Changes
+<!-- Describe what the changes are and link to a Discussion or Issue if one exists -->
+
+## Readiness Checklist
+
+### Author/Contributor
+
+- [ ] You have read [CONTRIBUTING](https://github.com/ericsizemore/numverify-api-client-php/blob/master/CONTRIBUTING.md).
+- [ ] If documentation is needed for this change, has that been included in this pull request?
+- [ ] run `composer run-script phpunit` and ensure you have test coverage for the lines you are introducing.
+- [ ] run `composer run-script phpstan` and fix any issues that you have introduced.
+- [ ] run `composer run-script psalm` and fix any issues that you have introduced.
+- [ ] run `composer run-script phpcs:check` and fix any issues that you have introduced.
+
+### Reviewer
+
+- [ ] Label as either `fix`, `documentation`, or `enhancement`.
+- [ ] Additionally label as `verified` or `unverified`.

.github/workflows/continuous-integration.yml

@@ -0,0 +1,108 @@
+name: "Continuous Integration"
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+# Cancels all previous workflow runs for the same branch that have not yet completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  COMPOSER_ROOT_VERSION: "3.99.99"
+
+jobs:
+  phpstan:
+    name: "PHPStan Static Analysis ${{ matrix.php }}"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: [ '8.2', '8.3', '8.4' ]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Install PHP ${{ matrix.php }}"
+        uses: shivammathur/setup-php@master
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: mbstring
+
+      - name: "Validate composer.json and composer.lock"
+        run: composer validate --strict
+
+      - name: "Setup Composer, install dependencies"
+        uses: ramsey/composer-install@v3
+        with:
+          composer-options: "--prefer-dist --optimize-autoloader"
+          require-lock-file: "true"
+
+      - name: "Run PHPStan"
+        run: composer run-script phpstan
+
+  psalm:
+    name: "Psalm"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Psalm Analysis"
+        uses: docker://vimeo/psalm-github-actions:latest
+        with:
+          args: --shepherd
+          composer_require_dev: true
+          security_analysis: true
+          report_file: results.sarif
+
+      - name: "Upload Security Analysis results to GitHub"
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: results.sarif
+
+  unit-test:
+    name: "Run Unit Tests ${{ matrix.php }}"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: [ '8.2', '8.3', '8.4' ]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 10
+
+      - name: "Install PHP ${{ matrix.php }}"
+        uses: shivammathur/setup-php@master
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: mbstring,
+          coverage: xdebug
+
+      - name: "Validate composer.json and composer.lock"
+        run: composer validate --strict
+
+      - name: "Setup Composer, install dependencies"
+        uses: ramsey/composer-install@v3
+        with:
+          composer-options: "--prefer-dist --optimize-autoloader"
+          require-lock-file: "true"
+
+      - name: "Run test suite"
+        run: composer run-script phpunit
+
+      - name: "Coverage check"
+        run: composer run-script code-coverage
+
+      - name: "Upload coverage reports to Scrutinizer"
+        uses: sudo-bot/action-scrutinizer@latest
+        with:
+          cli-args: "--format=php-clover build/logs/clover.xml"
+
+      - name: "Upload coverage reports to Codecov"
+        uses: codecov/codecov-action@v5.3.1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: ericsizemore/numverify-api-client-php