Update code to support new viewer directory

pymetaverse/viewer/__init__.py

@@ -0,0 +1,5 @@
+from .agent import Agent
+from .circuit import Circuit
+from .messages import getDefaultTemplate
+from .packet import Packet
+from .simulator import Simulator

pymetaverse/viewer/agent.py

@@ -1,5 +1,5 @@
+from ..eventtarget import EventTarget
 from .simulator import Simulator
-from .eventtarget import EventTarget
 from . import messages
 import asyncio
 

pymetaverse/viewer/circuit.py

@@ -1,5 +1,5 @@
 import asyncio
-from .eventtarget import EventTarget
+from ..eventtarget import EventTarget
 from . import packet
 
 class Circuit(asyncio.Protocol, EventTarget):

pymetaverse/viewer/simulator.py

@@ -1,8 +1,8 @@
 from .circuit import Circuit
 from . import messages
-from . import httpclient
-from . import llsd
-from .eventtarget import EventTarget
+from .. import httpclient
+from .. import llsd
+from ..eventtarget import EventTarget
 
 class Simulator(EventTarget):
     def __init__(self, agent):