Fix app icon in old Android versions, closes #120

app/src/main/AndroidManifest.xml

@@ -16,7 +16,7 @@
             android:allowBackup="true"
             android:icon="@mipmap/ic_launcher"
             android:label="@string/app_name"
-            android:roundIcon="@mipmap/ic_launcher_round"
+            android:roundIcon="@mipmap/ic_launcher"
             android:supportsRtl="true"
             android:theme="@style/AppTheme"
             android:networkSecurityConfig="@xml/network_security_config"

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -2,4 +2,4 @@
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@mipmap/ic_launcher_background"/>
     <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
-</adaptive-icon>
+</adaptive-icon>

fastlane/metadata/android/en-US/changelog/27.txt

@@ -5,6 +5,7 @@ Bugs:
 * Accurate naming of "mute notifications" from "pause notifications" (#224, thanks to @shadow00 for reporting)
 * Make messages with links selectable (#226, thanks to @StoyanDimitrov for reporting)
 * Restoring topics or settings from backup doesn't work (#223, thanks to @shadow00 for reporting)
+* Fix app icon on old Android versions (#120, thanks to @shadow00 for reporting)
 
 **Thanks for testing:**