revert to bugfender 0.7.2. because of

03-30 18:06:04.489 10335-10397/info.nightscout.android W/System.err: org.json.JSONException: No value for batteryLevel
03-30 18:06:04.489 10335-10397/info.nightscout.android W/System.err:     at org.json.JSONObject.get(JSONObject.java:389)
03-30 18:06:04.489 10335-10397/info.nightscout.android W/System.err:     at org.json.JSONObject.getDouble(JSONObject.java:444)
03-30 18:06:04.489 10335-10397/info.nightscout.android W/System.err:     at com.bugfender.sdk.a.a.a.c.b.a(Unknown Source)
03-30 18:06:04.489 10335-10397/info.nightscout.android W/System.err:     at com.bugfender.sdk.a.a.a.c.b.b(Unknown Source)
03-30 18:06:04.489 10335-10397/info.nightscout.android W/System.err:     at com.bugfender.sdk.a.a.a.c.a.a(Unknown Source)
03-30 18:06:04.489 10335-10397/info.nightscout.android W/System.err:     at com.bugfender.sdk.a.d.a.c(Unknown Source)
03-30 18:06:04.490 10335-10397/info.nightscout.android W/System.err:     at com.bugfender.sdk.a.a.k.a.c.d.a(Unknown Source)
03-30 18:06:04.490 10335-10397/info.nightscout.android W/System.err:     at com.bugfender.sdk.a.a.k.a.c.d.call(Unknown Source)
03-30 18:06:04.490 10335-10397/info.nightscout.android W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
03-30 18:06:04.490 10335-10397/info.nightscout.android W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
03-30 18:06:04.490 10335-10397/info.nightscout.android W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
03-30 18:06:04.490 10335-10397/info.nightscout.android W/System.err:     at java.lang.Thread.run(Thread.java:818)

app/build.gradle

@@ -155,7 +155,7 @@ dependencies {
     compile 'org.apache.commons:commons-lang3:3.4'
     compile 'com.mikepenz:google-material-typeface:2.2.0.1.original@aar'
     compile 'uk.co.chrisjenx:calligraphy:2.2.0'
-    compile 'com.bugfender.sdk:android:0.7.5'
+    compile 'com.bugfender.sdk:android:0.7.2'
     compile 'com.jjoe64:graphview:4.2.1'
     compile 'com.android.support:support-v4:23.4.0'
     compile 'com.google.code.gson:gson:2.7'