Bump to 3.6.8 and update changelog

Author: baka-kaba

Awful.apk/src/main/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="com.ferg.awfulapp"
-      android:versionCode="188"
-      android:versionName="3.6.7"
+      android:versionCode="189"
+      android:versionName="3.6.8"
       android:installLocation="auto">
     <supports-screens
         android:smallScreens="true"

Awful.apk/src/main/assets/changelog.html

@@ -6,7 +6,7 @@
 
 <main>
     <section>
-        <h2>3.6.7</h2>
+        <h2>3.6.8</h2>
         <ul>
             <li>Looks like you can add an icon when you send a private message now??</li>
             <li>Revealed post previews on OLED themes and stopped them jumping around</li>