Switch CI to GitHub Actions (#337)

Also update TagBot and CompatHelper setups.

.drone.jsonnet

@@ -0,0 +1,26 @@
+local Pipeline(os, arch, version) = {
+    kind: "pipeline",
+    name: os+" - "+arch+" - Julia "+version,
+    platform: {
+	os: os,
+	arch: arch
+    },
+    steps: [
+	{
+	    name: "build",
+	    image: "julia:"+version,
+	    commands: [
+		"julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true); using Pkg; Pkg.build(); Pkg.test(coverage=true)'"
+	    ]
+	}
+    ],
+    trigger: {
+        branch: ["master"]
+    }
+};
+
+[
+    Pipeline("linux", "arm",   "1.3"),
+    Pipeline("linux", "arm64", "1.3"),
+    Pipeline("linux", "arm64", "1.5")
+]

.drone.yml

@@ -12,6 +12,10 @@ steps:
   commands:
   - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true); using Pkg; Pkg.build(); Pkg.test(coverage=true)'"
 
+trigger:
+  branch:
+  - master
+
 ---
 kind: pipeline
 name: linux - arm64 - Julia 1.3
@@ -26,4 +30,26 @@ steps:
   commands:
   - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true); using Pkg; Pkg.build(); Pkg.test(coverage=true)'"
 
+trigger:
+  branch:
+  - master
+
+---
+kind: pipeline
+name: linux - arm64 - Julia 1.5
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+- name: build
+  image: julia:1.5
+  commands:
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true); using Pkg; Pkg.build(); Pkg.test(coverage=true)'"
+
+trigger:
+  branch:
+  - master
+
 ...

.gitattributes

@@ -0,0 +1 @@
+.drone.jsonnet linguist-detectable=false

.github/workflows/CompatHelper.yml

@@ -11,6 +11,6 @@ jobs:
       - name: Pkg.add("CompatHelper")
         run: julia -e 'using Pkg; Pkg.add("CompatHelper")'
       - name: CompatHelper.main()
+        run: julia -e 'using CompatHelper; CompatHelper.main()'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: julia -e 'using CompatHelper; CompatHelper.main()'

.github/workflows/TagBot.yml

@@ -1,11 +1,15 @@
 name: TagBot
 on:
-  schedule:
-    - cron: 43 22 * * *
+  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
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
+          ssh: ${{ secrets.DOCUMENTER_KEY }}

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: CI
+
+on:
+  push:
+    branches: "master"
+    tags: ["*"]
+  pull_request:
+  release:
+
+jobs:
+  test:
+    name: Julia ${{ matrix.julia-version }} - ${{ matrix.os }} - ${{ matrix.julia-arch }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        julia-version:
+          - "1.3"
+          - "1"
+          - "nightly"
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+        julia-arch:
+          - x64
+          - x86
+        # 32-bit Julia binaries are not available on macOS
+        exclude:
+          - os: macOS-latest
+            julia-arch: x86
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.julia-version }}
+          arch: ${{ matrix.julia-arch }}
+      - name: Cache artifacts
+        uses: actions/cache@v2
+        env:
+          cache-name: cache-artifacts
+        with:
+          path: ~/.julia/artifacts
+          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-test-${{ env.cache-name }}-
+            ${{ runner.os }}-test-
+            ${{ runner.os }}-
+      - uses: julia-actions/julia-buildpkg@latest
+      - uses: julia-actions/julia-runtest@latest
+      - uses: julia-actions/julia-uploadcodecov@v0.1
+        continue-on-error: true
+      - uses: julia-actions/julia-uploadcoveralls@v0.1
+        continue-on-error: true