Hot code replacement 

Hi I watched this http://www.youtube.com/watch?v=apZYqHPqzYo and thought it would be nice to have hot code replacement in go as well.

In Java, you have the OSGi project ( http://www.osgi.org/Main/HomePage ) and hotswap ( http://code.google.com/p/hotswap/  ), which facilitates upgrading and changing modules of your application without touching other modules.
