v6.41.0. Improvement.

- v6.41.0 June 25, 2013
	- Made debugging, tracing, and profiling easier
		- Added `docpad-debug` for easy debugging
		- Added `docpad-trace` for easy tracing
		- Added `--profile` for easy profiling
		- See our [debug guide](http://docpad.org/docs/debug) for details