--- a/app/build.gradle.kts	Wed Nov 28 18:12:51 2018 -0800
+++ b/app/build.gradle.kts	Wed Nov 28 18:34:47 2018 -0800
@@ -135,6 +135,9 @@
     implementation("com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:0.1.0")
 
     implementation(group = "com.geekorum", name = "geekdroid", version = "0.0.1", ext = geekdroidExt)
+    create(group = "com.geekorum", name = "geekdroid-firebase", version = "0.0.1", ext = geekdroidExt).also {
+        add("googleImplementation", it)
+    }
 
     implementation("com.google.android.material:material:1.0.0")
     implementation("net.opacapp:multiline-collapsingtoolbar:1.3.0")
@@ -169,15 +172,16 @@
     androidTestImplementation("androidx.test.ext:truth:1.0.0")
 
     implementation(kotlin("stdlib-jdk8", kotlinVersion))
+
+    val corountinesVersion: String by rootProject.extra
+    enforceCoroutinesPlatform(corountinesVersion)
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:$corountinesVersion")
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:$corountinesVersion")
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-jdk8:$corountinesVersion")
 
     implementation("com.jakewharton.timber:timber:4.7.1")
 
-    add("googleImplementation", "com.crashlytics.sdk.android:crashlytics:2.9.6") {
-        isTransitive = true
-    }
+    add("googleImplementation", "com.crashlytics.sdk.android:crashlytics:2.9.6")
     // ensure that the free flavor don't get any firebase dependencies
     configurations["freeImplementation"].exclude(group = "com.google.firebase")
 }

Binary file app/libs/geekdroid-firebase-0.0.1.aar has changed

--- a/app/src/google/java/com/geekorum/ttrss/logging/LoggingModule.kt	Wed Nov 28 18:12:51 2018 -0800
+++ b/app/src/google/java/com/geekorum/ttrss/logging/LoggingModule.kt	Wed Nov 28 18:34:47 2018 -0800
@@ -20,6 +20,7 @@
  */
 package com.geekorum.ttrss.logging
 
+import com.geekorum.geekdroid.firebase.logging.CrashlyticsLoggingTree
 import dagger.Module
 import dagger.Provides
 import dagger.multibindings.IntoSet
@@ -31,5 +32,8 @@
 @Module
 class LoggingModule {
     @Provides @IntoSet
-    fun provideLoggingTree(): Timber.Tree = Timber.DebugTree()
+    fun provideDebugLoggingTree(): Timber.Tree = Timber.DebugTree()
+
+    @Provides @IntoSet
+    fun provideCrashlyticsLoggingTree(): Timber.Tree = CrashlyticsLoggingTree()
 }

--- a/app/src/main/java/com/geekorum/ttrss/di/NetworkModule.java	Wed Nov 28 18:12:51 2018 -0800
+++ b/app/src/main/java/com/geekorum/ttrss/di/NetworkModule.java	Wed Nov 28 18:34:47 2018 -0800
@@ -43,7 +43,9 @@
 
     @Provides
     @Singleton
-    static OkHttpClient providesOkHttpclient(Cache cache, @Nullable HttpLoggingInterceptor requestLogger, @Nullable RetrofitInvocationLogger retrofitInvocationLogger) {
+    static OkHttpClient providesOkHttpclient(Cache cache,
+                                             @Nullable HttpLoggingInterceptor requestLogger,
+                                             @Nullable RetrofitInvocationLogger retrofitInvocationLogger) {
         OkHttpClient.Builder okHttpBuilder = new OkHttpClient.Builder();
         if (retrofitInvocationLogger != null) {
             okHttpBuilder.addInterceptor(retrofitInvocationLogger);

--- a/settings.gradle.kts	Wed Nov 28 18:12:51 2018 -0800
+++ b/settings.gradle.kts	Wed Nov 28 18:34:47 2018 -0800
@@ -64,6 +64,7 @@
     includeBuild(it) {
         dependencySubstitution {
             substitute(module("com.geekorum:geekdroid")).with(project(":library"))
+            substitute(module("com.geekorum:geekdroid-firebase")).with(project(":geekdroid-firebase"))
         }
     }
 }