allows range specification in for loops of the form (x..y)

for i in (1..10)
for i in (x..y), where x and y are passed
Added pagination class

LiquidTagPaginate tag block class - paginates a collection as per the
original Ruby library.

Supports all variables of the paginate object (see
http://wiki.shopify.com/Paginate) except paginate.parts, and you'll
need to create a custom filter if you want to use {{ paginate |
default_pagination }}
Added LiquidTagPaginate to core classes
Merge branch 'master' of https://github.com/syngency/php-liquid