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_downloads.xml

@@ -1,13 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orderingFromXml="true">
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <ListPreference android:title="@string/pref_download_threads"
+    <Preference
+        android:title="@string/pref_download_directory"
+        android:key="@string/pref_download_directory_key"/>
+
+    <ListPreference
+        android:title="@string/pref_download_threads"
         android:key="@string/pref_download_threads_key"
         android:entries="@array/download_threads"
         android:entryValues="@array/download_threads"
         android:defaultValue="1"
-        android:order="1"
         android:summary="%s"/>
 
 </PreferenceScreen>

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>