chore: Migrate to GitHub Actions and Sonatype (#54)

* chore: Migrate to GitHub Actions and Sonatype

Both Travis and Bintray are no longer very good for OSS projects.

* refactor: Update .gitignore

Co-authored-by: Jakub Janeček <[email protected]>

.github/workflows/build.yml

@@ -0,0 +1,18 @@
+name: Build
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - uses: coursier/cache-action@v5
+      - name: Check/Compile/Test
+        run: sbt test

.github/workflows/pull.yml

@@ -0,0 +1,17 @@
+name: PR Build
+on: [pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - uses: coursier/cache-action@v5
+        with:
+          extraKey: pr-${GITHUB_HEAD_REF}
+      - name: Check/Compile/Test
+        run: sbt test

.github/workflows/release.yml

@@ -0,0 +1,24 @@
+name: Release
+on:
+  push:
+    tags: ["v*"]
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - uses: coursier/cache-action@v5
+      - name: Check/Compile/Test
+        run: sbt test
+      - name: Release
+        env:
+          PGP_SECRET: ${{ secrets.PGP_SECRET }}
+          PGP_PASSPHRASE: ${{ secrets.PGP_PASSPHRASE }}
+          SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
+          SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
+        run: sbt ci-release