Fix status parsing

The get_status method now parses the output from linphone more
dynamically. This allows to fetch status information while in different
states of a call (ringing, call established, etc).

pylinphone.py

@@ -109,12 +109,10 @@ class LinphoneCommunicationSocket():
         answer = self.send_command("call-status {call_id}".format(call_id=call_id))
         if answer["status"]:
             data = answer["data"]
-            status = {
-                "state": data[0].split(":", 1)[1].strip(),
-                "from": data[1].split(":", 1)[1].strip(),
-                "direction": data[2].split(":", 1)[1].strip(),
-                "duration": int(data[3].split(":", 1)[1].strip())
-            }
+            status = {}
+            for line in data:
+                key, value = line.split(":", 1)
+                status[key.strip().lower()] = value.strip()
             return status
         else:
             raise RuntimeError(answer["error"])