v6.21.6. Improvement.

- v6.21.6 January 25, 2013
	- Better debugging around server starting
v6.21.7. Bugfix.

- v6.21.7 January 25, 2013
	- Fixed port not defaulting correctly on the `docpad-server` executable since v6.21.5
		- Closes [issue #407](https://github.com/bevry/docpad/issues/407) thanks to [man4u](https://github.com/man4u)
	- Updated dependencies
		- [bal-util](https://github.com/balupton/bal-util) from ~1.16.0 to ~1.16.1