2012.11.15, Version 0.0.9

* removed time from properties sent to server.  This is to ensure that
UTC is always used.  Mixpanel will set the correct time as soon as they
receive the event.

2012.10.24, Version 0.0.8

* added mp_lib property, so people can segment by library

2012.01.05, Version 0.0.7

* added unit tests
* people.increment() only prints error message if debug is true

2012.01.01, Version 0.0.6

* added engage support
	* people.set()
	* people.increment()
	* people.delete_user()

* deprecated old constructor: require("mixpanel").Client(token)

* added new constructor: require("mixpanel").init(token)
