Set the version to 0.13.0-dev
Add dir argument to util.getAST
Export the program object in bin/cli, so it can be required and extended
Change package.json version
Fix cleaning up the module storage for circular dependencies
Module objects are now instances of Module, instead of plain objects.

This way it can have some useful methods, so it's not necessary to loop
over them or to add some properties later at random places
Move the Out of Scope error to a better place.
Update commander dependency to 2.0
Update beta version
Add dependents array to the Module obj, a module knows its parents
0.13.0-beta.3
Make --watch more robust
0.13.0-beta.4
Fix the output of watched files, which got a new incorrect uid
0.13.0-beta.5
Add wrapup.unrequire method