Log Message:
Update ruby-liquid package to 2.3.0.

## 2.3.0

* Several speed/memory improvements
* Numerous bug fixes
* Added support for MRI 1.9, Rubinius, and JRuby
* Added support for integer drop parameters
* Added epoch support to `date` filter
* New `raw` tag that suppresses parsing
* Added `else` option to `for` tag
* New `increment` tag
* New `split` filter

## 2.2.1 / 2010-08-23

* Added support for literal tags