Converted Quantity Filter into a Class
Converted product-quantity-validations.php into a class
Converted product-quantity-meta-box.php into a class.
Converted product-quantity-rule-post-type.php to class.
Converted product-quantity-rules.php to class.
Restructured files.
Added Advanced Rules Options Page.

Got options page as well as activation checkbox and applicable values
crated and updating.
Site wide rule appearance and validations connected.
Added tag support.
Added Grouped Item Support
Update metabox for Group Product

Support of group products will allow the user to edit quantity rules
for the simple products linked to the group but not the grouped product
itself.
Added variable product support on cart and pages.

I localized the applicable rule values and conditionally force them on
the input value when the user uses the variation select boxes. (using
js)
Added tag column on Quantity Rule post type view.
Tag conditional statement improvement.
Added/updated messages.
Final update and testing before 2.0.0 release.
Merge pull request #18 from wpbackoffice/development

v2.0.0