- New version 9.3.4.

- Use communication mode only when call is (being) established.
- Introduced 2.5 sec delay to placing of a call in order to avoid loss of
  audio at the beginning of call.
- Fixed initializing default contacts when baresip is started the first time.
- Clear call URI when call is closed.

app/src/main/kotlin/com/tutpro/baresip/ContactActivity.kt

@@ -98,7 +98,7 @@ class ContactActivity : AppCompatActivity() {
             }
 
             Contact.contacts().sortBy { Contact -> Contact.name }
-            ContactsActivity.saveContacts(applicationContext.filesDir)
+            ContactsActivity.saveContacts(applicationContext.filesDir, "contacts")
 
             i.putExtra("name", newName)
             setResult(Activity.RESULT_OK, i)