set up Github Action CI

Author: johnnychen94

.github/workflows/TagBot.yml

@@ -1,9 +1,12 @@
 name: TagBot
 on:
-  schedule:
-    - cron: 0 * * * *
+  issue_comment:
+    types:
+      - created
+  workflow_dispatch:
 jobs:
   TagBot:
+    if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
     runs-on: ubuntu-latest
     steps:
       - uses: JuliaRegistries/TagBot@v1

.github/workflows/docs.yml

@@ -0,0 +1,42 @@
+name: Documentation
+
+on:
+  pull_request:
+  push:
+    branches:
+      - 'master'
+      - 'release-'
+    tags: '*'
+
+jobs:
+  deploy_html:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Julia
+        run: |
+          pip install jill
+          jill install --confirm
+      - name: Install dependencies
+        run: julia --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.instantiate()'
+      - name: Build and deploy
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+        run: |
+          julia -e 'include("contrib/build_sysimg.jl"); build_sysimg(force=true)'
+          julia --project=doc/ doc/make.jl deploy
+  # build_pdf:
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: actions/checkout@v2
+  #     - name: Build and deploy
+  #       uses: docker://tianjun2018/documenter-latex:latest
+  #       run: |
+  #         apt-get update -q && apt-get install python3-pip -yq
+  #         pip3 install jill && jill install --confirm
+  #         julia -e 'using InteractiveUtils; versioninfo()'
+  #         ls -al
+  #         julia --project=doc/ -e 'using Pkg; Pkg.develop(PacakageSpec(path=pwd())); Pkg.instantiate()'
+  #         julia --project=doc/ doc/make.jl pdf texplatform=native
+