bump version to 20.0.0 Alpha 01

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/build.gradle

@@ -39,8 +39,8 @@ android {
 
         // mayor.minor.hotfix.increment (for increment: 01-50=Alpha / 51-89=RC / 90-99=stable)
         // xx   .xxx  .xx    .xx
-        versionCode 190010004
-        versionName "19.1.0 Alpha 04"
+        versionCode 200000001
+        versionName "20.0.0 Alpha 01"
 
         flavorDimensions "default"
         renderscriptTargetApi 19