Fixed a race condition in the debug-server.js
Now setting the port number as a query string. If no port number is provided the default port will be used.
Update AUTHORS
ChangeLog: update for v0.7.3
start work on v0.7.3
Switch to core _debugger module.

Restructure debugger.js to parse messages using
'Protocol.execute' from the Node core module '_debugger'.
Update dependencies

express: 3.4 -> 3.5
async: 0.2 -> 0.4
debug: 0.7 -> 0.8
Injector API

Injector presents a communication bridge between app and debugger.
It provide the access to:
  1. 'require' function (that isn't global and rarely scoped)
  2. socket connection (that used V8 debugger protocol in messages)
    as to main communication channel between app and debugger.
It will be useful for injection of plugins and extentions.
It is first part of 'Console Implimentation' extention.