Proguard: activate it in release

vector/build.gradle

@@ -192,8 +192,14 @@ android {
             resValue "bool", "debug_mode", "false"
             buildConfigField "boolean", "LOW_PRIVACY_LOG_ENABLE", "false"
 
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+
+            postprocessing {
+                removeUnusedCode true
+                removeUnusedResources true
+                obfuscate false
+                optimizeCode true
+                proguardFiles 'proguard-rules.pro'
+            }
         }
     }
 

vector/proguard-rules.pro

@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keep class im.vector.riotx.features.** { *; }

vector/src/main/java/im/vector/riotx/features/rageshake/VectorFileLogger.kt

@@ -39,7 +39,7 @@ private const val SIZE_20MB = 20 * 1024 * 1024
 private const val SIZE_50MB = 50 * 1024 * 1024
 
 @Singleton
-class VectorFileLogger @Inject constructor(val context: Context, private val vectorPreferences: VectorPreferences) : Timber.DebugTree() {
+class VectorFileLogger @Inject constructor(val context: Context, private val vectorPreferences: VectorPreferences) : Timber.Tree() {
 
     private val maxLogSizeByte: Int
     private val logRotationCount: Int