added -dontshrink to proguard rules

app/build.gradle

@@ -37,6 +37,6 @@ dependencies {
 
     implementation "com.google.android.material:material:$materialVersion"
 
-    implementation 'org.osmdroid:osmdroid-android:' + osmdroidVersion
-    implementation 'com.google.code.gson:gson:' + gsonVersion
+    implementation "org.osmdroid:osmdroid-android:$osmdroidVersion"
+    implementation "com.google.code.gson:gson:$gsonVersion"
 }

app/proguard-rules.pro

@@ -15,3 +15,4 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+-dontshrink

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.3.0-alpha08'
+        classpath 'com.android.tools.build:gradle:3.3.0-alpha10'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -28,7 +28,7 @@ allprojects {
         buildToolsVersion = '28.0.2'
 
         constraintlayoutVersion = '1.1.3'
-        materialVersion = "1.0.0-rc01"
+        materialVersion = "1.0.0-rc02"
         appcompatVersion = '1.0.0-rc02'
         cardviewVersion = '1.0.0-rc02'
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Sep 05 10:45:03 CEST 2018
+#Wed Sep 19 11:17:58 CEST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10-all.zip