Upgrading from 0.3 to 0.4 grunt version

Hi,

I upgraded from 0.3 to 0.4 grunt version.
There were a lot of modifications.
The main modification is: Core Tasks are now Grunt Plugins.

I think I could not update the minify-lang.js file at line 48.
Also, I could not update the minify.js file at line 29.
Can you help me at two lines?

Thanks.


PS.: Upgrading from 0.3 to 0.4 can be found at: http://gruntjs.com/upgrading-from-0.3-to-0.4