Add support for reader plugins
add roster handling
Make Network.Xmpp.Types warning-clean
Merge branch 'master' of git://github.com/Philonous/pontarius
fix stanza ID generator
Merge branch 'master' of git://github.com/Philonous/pontarius
Add minor tutorial change
Version bump
Add Extra-Source-Files entry
change pullStanza to not block the stream
add debugging information for outgoing stanzas over TLS
cleanup in Xmpp.Concurrent.Threads
export InstantMessage, simpleIM and answerIM
Use the name space hack in the writer thread
fix debug messages in Network.Xmpp.TLS
export nsHack from Network.Xmpp.Stream
Merge remote-tracking branch 'philonous/master'

Conflicts:
	source/Network/Xmpp/Concurrent.hs
	source/Network/Xmpp/IM/Roster.hs
	source/Network/Xmpp/Types.hs
Bumbed dependencies of `containers' and `network'
We need 0.5 of `containers' to get Data.Map.Strict
We need 2.4.1 of `network' to get Show instance of PortID
answerMessage: Set "from" to Nothing

For some reason, answerMessage used to set messageFrom = messageTo,
while I believe that it should just set it to Nothing (the server will
set the "from" attribute for us).

Fixes #7.
Export various types

Types that are exported are:

Network.Xmpp:
* SaslFailure (..)
* StanzaHandler (..)

Network.Xmpp.Internal
* ConnectionState (..)
* Stanza (..)
* TlsBehaviour (..)

Network.Xmpp.IM
* InstantMessage (..)
* Subscription (..)

Fixes #10.
Fixes #12.
Fixes #16.
add getStanza and getStanzaChan
Modify `PresenceType'; update pickler; skip Maybe in `presenceType'

Fixes #15.