fix list of exported modules

pontarius-xmpp.cabal

@@ -1,5 +1,5 @@
 Name:          pontarius-xmpp
-Version:       0.4.0.0
+Version:       0.4.0.1
 Cabal-Version: >= 1.9.2
 Build-Type:    Custom
 License:       BSD3
@@ -11,7 +11,7 @@ Maintainer:    info@jonkri.com
 Stability:     alpha
 Homepage:      https://github.com/pontarius/pontarius-xmpp/
 Bug-Reports:   https://github.com/pontarius/pontarius-xmpp/issues/
-Package-URL:   http://www.jonkri.com/releases/pontarius-xmpp-0.4.0.0.tar.gz
+Package-URL:   http://www.jonkri.com/releases/pontarius-xmpp-0.4.0.1.tar.gz
 Synopsis:      An XMPP client library
 Description:   Pontarius XMPP is a work in progress implementation of RFC 6120
                ("XMPP CORE"), RFC 6121 ("XMPP IM"), and RFC 6122 ("XMPP ADDR").
@@ -85,7 +85,8 @@ Library
   Exposed-modules: Network.Xmpp
                  , Network.Xmpp.IM
                  , Network.Xmpp.Internal
-                 , Network.Xmpp.Concurrent
+                 , Network.Xmpp.Lens
+  Other-modules:   Network.Xmpp.Concurrent
                  , Network.Xmpp.Concurrent.Basic
                  , Network.Xmpp.Concurrent.IQ
                  , Network.Xmpp.Concurrent.Message
@@ -97,7 +98,6 @@ Library
                  , Network.Xmpp.IM.Presence
                  , Network.Xmpp.IM.Roster
                  , Network.Xmpp.IM.Roster.Types
-                 , Network.Xmpp.Lens
                  , Network.Xmpp.Marshal
                  , Network.Xmpp.Sasl
                  , Network.Xmpp.Sasl.Common
@@ -184,4 +184,4 @@ Source-Repository head
 Source-Repository this
   Type: git
   Location: git://github.com/pontarius/pontarius-xmpp.git
-  Tag: 0.4.0.0
+  Tag: 0.4.0.1