Added GAs

.github/.gitignore

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+*.html

.github/workflows/R-CMD-check.yaml

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+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+name: R-CMD-check
+
+jobs:
+  R-CMD-check:
+    runs-on: ${{ matrix.config.os }}
+
+    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - {os: macos-latest,   r: 'release'}
+          - {os: windows-latest, r: 'release'}
+          - {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
+          - {os: ubuntu-latest,   r: 'release'}
+          - {os: ubuntu-latest,   r: 'oldrel-1'}
+
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      R_KEEP_PKG_SOURCE: yes
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: r-lib/actions/setup-pandoc@v2
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: ${{ matrix.config.r }}
+          http-user-agent: ${{ matrix.config.http-user-agent }}
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::rcmdcheck
+          needs: check
+
+      - uses: r-lib/actions/check-r-package@v2
+        with:
+          upload-snapshots: true

.github/workflows/pkgdown.yaml

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+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+  release:
+    types: [published]
+  workflow_dispatch:
+
+name: pkgdown
+
+jobs:
+  pkgdown:
+    runs-on: ubuntu-latest
+    # Only restrict concurrency for non-PR jobs
+    concurrency:
+      group: pkgdown-${{ github.event_name != 'pull_request' || github.run_id }}
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: r-lib/actions/setup-pandoc@v2
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::pkgdown, local::.
+          needs: website
+
+      - name: Build site
+        run: pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)
+        shell: Rscript {0}
+
+      - name: Deploy to GitHub pages 🚀
+        if: github.event_name != 'pull_request'
+        uses: JamesIves/[email protected]
+        with:
+          clean: false
+          branch: gh-pages
+          folder: docs

.github/workflows/pr-commands.yaml

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+on:
+  issue_comment:
+    types: [created]
+name: Commands
+jobs:
+  document:
+    if: startsWith(github.event.comment.body, '/document')
+    name: document
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: r-lib/actions/pr-fetch@master
+        with:
+          repo-token: ${{ secrets.GH_PAT }}
+      - uses: r-lib/actions/setup-r@master
+      - name: Install dependencies
+        run: Rscript -e 'install.packages(c("remotes", "roxygen2"))' -e 'remotes::install_deps(dependencies = TRUE)'
+      - name: Document
+        run: Rscript -e 'roxygen2::roxygenise()'
+      - name: commit
+        run: |
+          git add man/\* NAMESPACE
+          git commit -m 'Document'
+      - uses: r-lib/actions/pr-push@master
+        with:
+          repo-token: ${{ secrets.GH_PAT }}
+  style:
+    if: startsWith(github.event.comment.body, '/style')
+    name: document
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@master
+      - uses: r-lib/actions/pr-fetch@master
+        with:
+          repo-token: ${{ secrets.GH_PAT }}
+      - uses: r-lib/actions/setup-r@master
+      - name: Install dependencies
+        run: Rscript -e 'install.packages("styler")'
+      - name: style
+        run: Rscript -e 'styler::style_pkg()'
+      - name: commit
+        run: |
+          git add \*.R
+          git commit -m 'style'
+      - uses: r-lib/actions/pr-push@master
+        with:
+          repo-token: ${{ secrets.GH_PAT }}