release v0.6

finally!

thanks to:
- everyone who has helped with testing and bug reporting
- all contributors
- all demo song artists
- every user

thank you
I really mean it

android/app/build.gradle

@@ -15,8 +15,8 @@ android {
         }
         minSdkVersion 21
         targetSdkVersion 26
-        versionCode 180
-        versionName "0.6pre18"
+        versionCode 181
+        versionName "0.6"
         externalNativeBuild {
             cmake {
                 arguments "-DANDROID_APP_PLATFORM=android-21", "-DANDROID_STL=c++_static", "-DWARNINGS_ARE_ERRORS=ON"

android/app/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="org.tildearrow.furnace"
-    android:versionCode="180"
-    android:versionName="0.6pre18"
+    android:versionCode="181"
+    android:versionName="0.6"
     android:installLocation="auto">
 
     <!-- OpenGL ES 2.0 -->