Fixed `digits:value` validation rule. Validation rule checks against `numeric` rule before it attempts to check actual length of cheated value.
fix validator docblocks
Updated for phpunit 4.0
Add check for parameter count
fix typos
fix param count for unique and exists
Merge pull request #3818 from GrahamCampbell/4.1-phpunit

[4.1] PHPUnit 4.0
Merge 4.1.