Add Github actions

Author: devmotion

.github/workflows/CI.yml

@@ -0,0 +1,59 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - '1.0'
+          - '1'
+          - 'nightly'
+        os:
+          - ubuntu-latest
+        arch:
+          - x64
+        include:
+          - version: '1'
+            os: ubuntu-latest
+            arch: x64
+            coverage: true
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+          arch: ${{ matrix.arch }}
+      - uses: actions/cache@v1
+        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@v1
+      - uses: julia-actions/julia-runtest@v1
+        with:
+          coverage: ${{ matrix.coverage || false }}
+      - uses: julia-actions/julia-processcoverage@v1
+        if: matrix.coverage
+      - uses: codecov/codecov-action@v1
+        if: matrix.coverage
+        with:
+          file: lcov.info
+      - uses: coverallsapp/github-action@master
+        if: matrix.coverage
+        with:
+            github-token: ${{ secrets.GITHUB_TOKEN }}
+            path-to-lcov: ./lcov.info

.github/workflows/CompatHelper.yml

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+name: CompatHelper
+
+on:
+  schedule:
+    - cron: 0 0 * * *
+  workflow_dispatch:
+
+jobs:
+  CompatHelper:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Install CompatHelper"
+        run: |
+          import Pkg
+          name = "CompatHelper"
+          uuid = "aa819f21-2bde-4658-8897-bab36330d9b7"
+          version = "2"
+          Pkg.add(; name, uuid, version)
+        shell: julia --color=yes {0}
+      - name: "Run CompatHelper"
+        run: |
+          import CompatHelper
+          CompatHelper.main()
+        shell: julia --color=yes {0}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COMPATHELPER_PRIV: ${{ secrets.DOCUMENTER_KEY }}

.github/workflows/TagBot.yml

@@ -0,0 +1,17 @@
+name: TagBot
+
+on:
+  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 }}

README.md

@@ -1,5 +1,9 @@
 # IrrationalConstants.jl
 
+[![Build Status](https://github.com/JuliaMath/IrrationalConstants.jl/workflows/CI/badge.svg?branch=main)](https://github.com/JuliaMath/IrrationalConstants.jl/actions/workflows/CI.yml?query=branch%3Amain)
+[![Coverage](https://codecov.io/gh/JuliaMath/IrrationalConstants.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/JuliaMath/IrrationalConstants.jl)
+[![Coverage](https://coveralls.io/repos/github/JuliaMath/IrrationalConstants.jl/badge.svg?branch=main)](https://coveralls.io/github/JuliaMath/IrrationalConstants.jl?branch=main)
+
 This package defines the following irrational constants:
 
 ```julia