- Make the API functions more robust against bad inputs
 - Fix some inefficiencies
 - Generally make it use better Lisp style
 - Get the example code working

Testing: The STOMP tests that Matt already wrote still work correctly.

git-svn-id: https://cl-stomp.googlecode.com/svn/trunk@2 d1d7026a-752b-0410-a81f-eb38e5697356