Fix Removed conditional statement when the theme widgets path for classes not exists
Add Conditional statement when widgets are loading, to prevent to process if there are no widgets on systems.
Added Func to get theme widgets and classes path
Removed the widgets path property, not needed
Added: Func to get checked attribute
Refactor: Renamed _get_attr_select to _get_attr_selected
Tweak: Check if value of the instance is different than UNDEF constant, instead check only for the positive value
Removed wrapper function for post meta
Revert UNDEF to numeric value
Added: sz_widgets_spl_autoloader_register to add more directories for autoloader
Tweak: comment for __call func
Woops, lost conditional statement to check function existence
Tweak: Remove Conditional for check if we are in loop
Refactor: Changed get_the_author func to get_the_author_meta for get info outside the loop
Refactor: Change to SZ_Widget::UNDEF instead of using a different constant
Added: Conditional statement to set to UNDEF at first use of the widget
Wops var_dump on the run