Log Message:
Update ruby-ansi to 1.4.3.

== 1.4.3 | 2012-06-26

This release bring two small changes. The first improves support
for Windows by only rescuing LoadError when 'win32console' fails
to load. The second improves the heuritstics used for determining
the current terminal screen width.

Changes:

* Only rescue LoadError on windows require. (#9) [bug]
* Improvements for getting proper screen width.