Create GitHub Actions configs

.github/workflows/gradle.yml

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+# This workflow will build a Java project with Gradle
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: Java CI with Gradle
+
+on:
+  push:
+    branches: [master, gradle-and-fixes]
+  pull_request:
+    branches: [master, gradle-and-fixes]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Update version for CI snapshot
+        run: .github/workflows/make-snapshot-version.sh
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Build Windows executable with launch4j
+        run: ./gradlew createExe
+      # Artifact upload disabled to avoid violating licenses - see https://github.com/VUE/VUE/issues/49
+      # - name: Upload jar
+      #   uses: actions/upload-artifact@v1
+      #   with:
+      #     name: jar
+      #     path: VUE2/build/libs
+      # - name: Upload bundles
+      #   uses: actions/upload-artifact@v1
+      #   with:
+      #     name: bundles
+      #     path: VUE2/build/distributions
+      # - name: Upload Windows executable
+      #   uses: actions/upload-artifact@v1
+      #   with:
+      #     name: windows
+      #     path: VUE2/build/launch4j

.github/workflows/make-snapshot-version.sh

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+#!/bin/sh
+set -e
+
+NEWVER=+CI-$(date +%Y%m%d)
+echo "Appending suffix snapshot version $NEWVER"
+sed -i "s/vue.version=\(.*\)/\1$NEWVER/" VUE2/src/main/resources/tufts/vue/VueResources.properties