Ending slash in 'configure' method breaks some options

[dhardtke]

Hey,

there is a mistake in the Tpl.php, around line 154:

} elseif (substr($value,-1) !== '/') {

this is my fix

} elseif (($setting == "tpl_dir" || $setting == "cache_dir") && substr($value,-1) !== '/') {

Without my fix the option "auto_escape" => false doesn't work for example.

Greetings

[feulf]

I've open a pull request to fix your problem, thanks.