version bump to 0.7.3 and changelog

AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="eu.siacs.conversations"
-    android:versionCode="28"
-    android:versionName="0.7.2" >
+    android:versionCode="31"
+    android:versionName="0.7.3" >
 
     <uses-sdk
         android:minSdkVersion="14"
@@ -124,4 +124,4 @@
         <activity android:name="de.duenndns.ssl.MemorizingActivity" />
     </application>
 
-</manifest>
+</manifest>

CHANGELOG.md

@@ -1,5 +1,10 @@
 ###Changelog
 
+####Version 0.7.3
+* revised tablet ui
+* internal rewrites
+* bug fixes
+
 ####Version 0.7.2
 * show full timestamp in messages
 * brought back option to use JID to identify conferences