Add tests for url generated with named route.
Allow specifying route name when using url array.
Refactor code to allow passing url fragmenent for named routes.
Update docblock.
Add case expression class for simple SQL case statements
Fix copy-paste error
Allow for multiple "WHEN" parts
Change from QueryExpression to ExpressionInterface in docs
Numerics should be treated the same as strings when compiling the sql
Add doc block for QueryExpression::addCase
Add integration test for the CaseExpression
Fix failing test on SqlServer
Unalign doc block
Remove redudant usage forms for Router::url().

You can no longer specify route name as string for first argument.
Minor optimization.
Use Request::env() instead of overriding globals.
Move all url generation methods from Helper to UrlHelper.
Update helpers to use UrlHelper.
Doh, actaully add UrlHelper to repo.
Use backslash in plugin name when loading.