Changes:

- Declare RxJava as dependency
- Add a folder chooser for downloads
- Fix a force close when updating library
- Enable ACRA and add a setting to send crash reports
- Manga class now uses the default get resolver
- Other minor changes

app/src/main/res/xml/pref_main.xml

@@ -21,4 +21,10 @@
         android:persistent="false"
         android:title="@string/pref_category_cache" />
 
+    <CheckBoxPreference
+        android:key="acra.enable"
+        android:title="@string/pref_enable_acra"
+        android:summary="@string/pref_acra_summary"
+        android:defaultValue="false"/>
+
 </PreferenceScreen>