options for observers are always defined as an array
expirimental support for DB::expr() in ORM selects

using syntax ->select(array(DB::expr("count(*)"), "columnaliasname")->
add support for select('*')
Merge pull request #336 from sagikazarmark/1.8/develop

Observer Slug manually assigned property
added internal sanitation method to allow selective sanitation

by overloading the method in your model and checking the $field value
Correcting typo in slug observer
Merge pull request #343 from TamasBarta/1.8/develop

Correcting typo in slug observer
Update slug.php

Bad logical operator
Merge pull request #344 from sagikazarmark/patch-1

Update slug.php
fixed incorrect processing of DB_Expr objects in select(); closes #345,#346