Merge remote-tracking branch 'origin/master'

.github/workflows/main.yml

+name: CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Gradle Android
+      uses: Raul6469/android-gradle-action@1.0.0
+    

.travis.yml

 language: android
-sudo: required
+
 jdk: oraclejdk8
 
 env: