Delete function HTML_Template_Flexy_is_a()
Cleanup EOLs
Change default character set to UTF-8
Change to use the 'charset' option for htmlspecialchars()
and htmlentities() in the compiled template.
Rename old style constructors to __construct()
Delete clone() for PHP 4
Improve PHP 5 strict
Replace dirname(__FILE__) with __DIR__
Replace is_a() and $this->is_a() with 'instanceof'
Update tests